wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

DWBI

Total questions: 81

Worksheet time: 41mins

Name
Class
Date
1.

Non-volatile in the context of a Data Warehouse means...

a)

Data only persists during the active session

b)

Data does not change after being loaded into the warehouse

c)

Data cannot be analyzed again

d)

Data is frequently updated to maintain accuracy

2.

An analyst selects only sales data for the region "West Java" and the product "Beverages". This is an example of...

a)

Pivot

b)

Drill-down

c)

Dice

d)

Roll-up

3.

What is the primary definition of a Data Warehouse?

a)

A data storage system used for analysis and decision-making

b)

A system for daily transactions in a company

c)

A place to store project document files

d)

Hardware for storing customer data

4.

Transaction data from various branches is uploaded to the data warehouse every night. This process is part of the stage…

a)

Integration

b)

Transformation

c)

Extraction

d)

Load

5.

When a customer changes address, the system keeps the old version and the new version in two separate rows. There are “Start Date” and “End Date” columns to track the active period. This is an example of…

a)

SCD Type 0

b)

SCD Type 1

c)

SCD Type 3

d)

SCD Type 2

6.

In a school’s analytics system, the fact table “Student Grades” is connected to the dimensions “Student”, “Subject”, and “Teacher”. The “Subject” dimension has subdimensions “Subject Group” and “Field of Study” in separate tables. This reflects the schema…

a)

Star Schema

b)

Snowflake Schema

c)

Flat Schema

d)

Fact Constellation

7.

If a dimension table has sub-dimensions or hierarchical relationships, the schema used is...

a)

Flat Schema

b)

Star Schema

c)

Cube Schema

d)

Snowflake Schema

8.

A company stores the current version information in the main row and keeps all historical data in a separate history table. This is the method...

a)

SCD Type 3

b)

SCD Type 2

c)

SCD Type 4

d)

SCD Type 0

9.

A manufacturing company builds a data warehouse schema that displays hierarchical relationships in the location dimension, where City is linked to Province and Country as sub-dimensions in separate table structures. Such a schema indicates characteristics of...

a)

Star Schema

b)

Hybrid Schema

c)

Snowflake Schema

d)

Conformed Dimension

10.

A university manages two fact tables: "Student Enrollment" and "Tuition Payment". Both tables are linked to the same dimension tables, such as Student, Study Program, and Semester. Which schema model is most suitable for this situation?

a)

Normalized Schema

b)

Fact Constellation Schema

c)

Independent Star Schema

d)

Star Schema

11.

During the ETL process, the same transaction data appears twice due to input errors. The required transformation technique is...

a)

Data Deduplication

b)

Data Mining

c)

Sorting

d)

Aggregation

12.

In an OLAP report, a user chooses to view only data from the year 2024. This operation is called...

a)

Slice

b)

Pivot

c)

Drill-down

d)

Roll-up

13.

An analyst wants to filter data only for January 2025 across all regions and all products. The operation performed is...

a)

Slice

b)

Dice

c)

Roll-up

d)

Drill-down

14.

In a Star Schema, dimension tables are typically...

a)

Denormalized for query efficiency

b)

Do not contain attributes

c)

Unrelated to the fact table

d)

Highly structured and normalized

15.

A financial system only records the latest account status without keeping previous versions. This is classified as…

a)

SCD Type 0

b)

SCD Type 2

c)

SCD Type 3

d)

SCD Type 1

16.

A retail company builds several data marts separately for the sales, finance, and logistics divisions. Each is developed by different teams without coordination and they are not connected to each other. What architecture are they using?

a)

Independent Data Marts

b)

Data Mart Bus Architecture

c)

Federated Data Warehouse

d)

Hub-and-Spoke Architecture

17.

Which of the following schemas usually requires more JOIN operations due to complex dimension structures?

a)

Snowflake Schema

b)

Star Schema

c)

Dimensional Flat Schema

d)

Fact Constellation

18.

A fact table "Daily Sales" at a retail company is directly connected to the dimensions "Product," "Time," and "Store." All dimensions consist of a single table without subdimensions. This approach describes…

a)

Star Schema

b)

Federated Schema

c)

Fact Constellation

d)

Snowflake Schema

19.

The main characteristics of a Data Warehouse are, except

a)

Time-variant

b)

Integrated

c)

Volatile

d)

Subject-oriented

20.

What happens when data from various operational systems enters the Data Warehouse and becomes integrated

a)

The data is immediately displayed on a dashboard

b)

The data is stored in its original format

c)

The data is converted to a standard format and consolidated

d)

The data is stored only if it comes from the main system

21.

Non-volatile in the context of Data Warehouse means...

a)

Data only persists during an active session

b)

Data does not change after being loaded into the warehouse

c)

Data cannot be analyzed again

d)

Data is frequently updated to maintain accuracy

22.

An analyst selects only sales data for the region "West Java" and the product "Beverages". This is an example of...

a)

Pivot

b)

Drill-down

c)

Dice

d)

Roll-up

23.

What is the primary definition of a Data Warehouse?

a)

A data storage system used for analysis and decision-making

b)

A system for daily transactions in a company

c)

A place to store project document files

d)

Hardware for storing customer data

24.

Transaction data from various branches is uploaded to the data warehouse every night. This process is part of the stage...

a)

Integration

b)

Transformation

c)

Extraction

d)

Load

25.

When a customer changes address, the system stores the old and new versions in two separate rows. There are “Start Date” and “End Date” columns to track the active period. This is an example of...

a)

SCD Type 0

b)

SCD Type 1

c)

SCD Type 3

d)

SCD Type 2

26.

In a school analytics system, the fact table “Student Grades” is connected to the dimensions “Student,” “Subject,” and “Teacher.” The “Subject” dimension has subdimensions “Subject Group” and “Field of Study” in separate tables. This reflects the schema...

a)

Star Schema

b)

Snowflake Schema

c)

Flat Schema

d)

Fact Constellation

27.

If a dimension table has sub-dimensions or hierarchical relationships, the appropriate schema is

a)

Flat Schema

b)

Star Schema

c)

Cube Schema

d)

Snowflake Schema

28.

A company stores the current version of information in the main row and keeps all historical data in a separate history table. This method is

a)

SCD Type 3

b)

SCD Type 2

c)

SCD Type 4

d)

SCD Type 0

29.

A manufacturing company designs a data warehouse schema showing hierarchical relationships in the location dimension, where City connects to Province and Country as subdimensions in separate tables. This schema is characteristic of

a)

Star Schema

b)

Hybrid Schema

c)

Snowflake Schema

d)

Conformed Dimension

30.

A university manages two fact tables: Student Enrollment and Tuition Payment. Both fact tables link to the same dimension tables, such as Student, Program, and Semester. The most suitable schema model for this situation is

a)

Normalized Schema

b)

Fact Constellation Schema

c)

Independent Star Schema

d)

Star Schema

31.

During ETL, the same transaction data appears twice due to an input error. The required transformation technique is...

a)

Data Deduplication

b)

Data Mining

c)

Sorting

d)

Aggregation

32.

In an OLAP report, a user chooses to view only data from the year 2024. This operation is called...

a)

Slice

b)

Pivot

c)

Drill-down

d)

Roll-up

33.

An analyst wants to filter data only for January 2025 across all regions and products. The operation performed is...

a)

Slice

b)

Dice

c)

Roll-up

d)

Drill-down

34.

In a Star Schema, dimension tables are typically...

a)

Denormalized for query efficiency

b)

Do not contain attributes

c)

Not related to the fact table

d)

Highly structured and normalized

35.

A finance system only records the latest account status without storing previous versions. This is classified as...

a)

SCD Type 0

b)

SCD Type 2

c)

SCD Type 3

d)

SCD Type 1

36.

A retail company builds several data marts separately for sales, finance, and logistics. Each is developed by different teams without coordination and they are not interconnected. Which architecture are they using?

a)

Independent Data Marts

b)

Data Mart Bus Architecture

c)

Federated Data Warehouse

d)

Hub-and-Spoke Architecture

37.

Which of the following schemas typically requires more JOIN operations due to complex dimension structures?

a)

Snowflake Schema

b)

Star Schema

c)

Dimensional Flat Schema

d)

Fact Constellation

38.

A "Daily Sales" fact table in a retail company connects directly to the dimensions "Product", "Time", and "Store". Each dimension consists of a single table without subdimensions. This approach describes...

a)

Star Schema

b)

Federated Schema

c)

Fact Constellation

d)

Snowflake Schema

39.

Which of the following is NOT a primary characteristic of a Data Warehouse?

a)

Time-variant

b)

Integrated

c)

Volatile

d)

Subject-oriented

40.

When data from various operational systems enters the Data Warehouse and becomes integrated, what happens to the data?

a)

It is immediately displayed on a dashboard

b)

It is stored in its original format

c)

It is converted to a standard format and consolidated

d)

It is stored only if it comes from the main system

41.

Regression is a widely used statistical analysis technique. One of the benefits of regression is

a)

Proving a hypothesis

b)

Showing a depiction of data spread

c)

Prediction/forecasting (predicting the value of the dependent variable when all independent variables’ values are known)

d)

Depicting the spread or distribution of data

42.

A diagram that maps hierarchical data using nested shapes (typically rectangles), displaying the hierarchy as a set of layered rectangles, is called

a)

Histogram

b)

Bullet

c)

Tree map

d)

Heatmap

43.

Main purpose of data visualization is

a)

To make it easier for stakeholders to make decisions based on the displayed data

b)

To help study data or information

c)

To make data or information look more attractive

d)

To communicate information clearly and efficiently to users through information graphics

44.

The type of chart suitable for visualizing words that are frequently discussed in a social media conversation topic is

a)

Gantt chart

b)

Bar chart

c)

Word cloud

d)

Pie chart

45.

In a medical dataset of laboratory examination results, numeric values must be recorded to an appropriate number of decimal places for accurate interpretation of test outcomes. The data readiness characteristic in which data values are defined at a detailed level for the intended use is called

a)

Data granularity

b)

Data consistency

c)

Data relevancy

d)

Data accuracy

46.

Consider variables such as age, number of children, total household income (in Rupiah), travel speed (in Km/hour), and temperature (in degrees Celsius). The taxonomy of these data is called

a)

Nominal

b)

Ratio

c)

Numeric

d)

Categorical

47.

The mathematical method used to estimate or describe the degree of variation in a variable is called. Select one.

a)

Variance

b)

Measures of Dispersion

c)

Standard Deviation

d)

Quartiles and interquartile range

48.

Measurement variables commonly found in physics and engineering—such as mass, length, time, plane angle, energy, and electric charge—are examples of the data taxonomy called. Select one.

a)

Interval data

b)

Ordinal data

c)

Numeric data

d)

Ratio data

49.

Select one. Measurement of dispersion is a mathematical method used to estimate or describe the level of variation in a particular variable of interest and represents the numerical spread of a given dataset. The following is not a measure of dispersion:

a)

Variance

b)

Skewness

c)

Standard Deviation

d)

Quartiles and interquartile range

50.

Select one. The representation of data that is changed into groups without considering the order among the groups, for example "marital status," in data taxonomy is called:

a)

Numerical

b)

Ordinal

c)

Text

d)

Interval

51.

Reducing the range of data in each numeric variable to a standard range using normalization or scaling is the process. Select one.

a)

Reduce dimension

b)

Reduce noise

c)

Normalize data

d)

Balance data

52.

Hypothesis testing is an example of implementation of. Select one.

a)

OLAP

b)

OLTP

c)

Descriptive Statistics

d)

Inferential Statistics

53.

Scaling values to the range 0–1 in data transformation is known as. Select one.

a)

Discretize Data

b)

Reduce Attribute

c)

Normalize Data

d)

Balance Skewed Data

54.

Select one: Business reports can be produced in the following formats, except

a)

Metric management reports

b)

Dashboard-type reports

c)

Balanced scorecard reports

d)

Database management

55.

Select one: A Metric Management Report that presents an integrated view of organizational success covering financial, customer, business process, and learning-and-growth perspectives is called

a)

Six Sigma

b)

Balanced Scorecard

c)

Total Quality Management

d)

Key performance indicators

56.

Select one: Sales data in a supermarket are presented as an example above. Data like that are called

a)

Structured data

b)

Semi-structured data

c)

Unstructured data

d)

All of the above

57.

Select one: Celsius temperature is an example of …

a)

Ordinal Data

b)

Nominal Data

c)

Interval Data

d)

Ratio Data

58.

Select one: Which is an example of ordinal data?

a)

Temperature measurement data

b)

Population count data

c)

Binomial data (yes/no)

d)

Range of students’ course grades

59.

Select one: Raw Data Source → (1) Data Transformation → (2) Data Cleaning → (3) Data Reduction → (4) Data Consolidation → Well Formed Data. The correct order of Data Preprocessing steps is …

a)

3-2-4-1

b)

4-2-1-3

c)

4-1-3-2

d)

2-3-4-1

60.

Select one: PT XYZ wants to monitor the relationship between total product sales and the costs incurred for product advertising. Based on this case, the most appropriate type of chart to use is

a)

Bar Chart

b)

Scatterplot

c)

Treemap

d)

Boxplot

61.

Select one: In linear regression, the dispersion of errors from predicted values must be consistent; this assumption is known as

a)

Linearity

b)

Constant Variance

c)

Multicollinearity

d)

Independence

62.

Select one: A person’s marital status is an example of

a)

Ordinal Data

b)

Nominal Data

c)

Interval Data

d)

Ratio Data

63.

Statistical methods in business reports can be categorized into. Select one.

a)

Descriptive or inferential

b)

Descriptive or narrative

c)

Narrative or inferential

d)

Inferential or differential

64.

Stunting diagnosis in children can be performed through physical examinations, such as measuring body weight, height, and head circumference. The taxonomy of data obtained in that diagnosis is called … Select one.

a)

Nominal

b)

Ordinal

c)

Interval

d)

Ratio

65.

In linear regression assumptions, the assumption stating that the errors of the response variable are not correlated with each other is the assumption of. Select one.

a)

Linearity

b)

Independence (of error)

c)

Normality (of error)

d)

Constant variance (of error)

66.

The head of the community health center wants to compare the number of toddlers with stunting across 5 Posyandu to identify which has the fewest to the most cases. The most appropriate chart for this visualization is

a)

Line Chart

b)

Bar Chart

c)

Bubble Chart

d)

Pie Chart

67.

The term used to analyze, characterize, and summarize structured data stored in an organization’s database using cubes is

a)

Statistics

b)

Descriptive

c)

Inferential

d)

OLAP

68.

Which of the following is not a key to successful reporting?

a)

Clarity

b)

Brevity

c)

Open

d)

Correctness

69.

If imbalanced data are found, which data reduction process should be performed?

a)

Construct Attribute

b)

Reduce Attribute

c)

Normalize Data

d)

Oversampling Data

70.

One characteristic of data readiness for an analytic study is that every element of the data is available in the dataset; this is called

a)

Data source reliability

b)

Data source accuracy

c)

Data accessibility

d)

Data richness

71.

Select one. Simple, unorganized and unprocessed facts are characteristics of

a)

Data

b)

Information

c)

Knowledge

d)

Policy

72.

Select one. The processes included in data preprocessing are

a)

Data collection – data cleaning – data transformation – data reduction

b)

Data consolidation – data cleaning – data transformation – data reduction

c)

Data collection – data cleaning – data normalization – data reduction

d)

Data consolidation – data cleaning – data normalization – data reduction

73.

Select one. Reducing the range of existing data to a standard range (0–1) in data preprocessing is called

a)

Data normalization

b)

Data cleaning

c)

Data reduction

d)

Data collecting

74.

Select one: Yes/No and True/False belong to which type of data?

a)

Nominal data

b)

Ordinal data

c)

Textual data

d)

Unstructured data

75.

Select one: A district head claims that the poverty rate in his region is very low. To verify this, a survey of household income and expenditure is conducted, which theoretically can yield the poverty rate. Considering time and cost, a sample of 10,000 households is chosen from a total population of 100,000 households. The suitable statistical modeling for this case is

a)

Descriptive statistics

b)

Central tendency statistics

c)

Inferential statistics

d)

Distribution statistics

76.

Select one: The appropriate diagram to illustrate comparison of continuous values across two categories using color, so users can quickly see where category intersections are strongest and weakest based on numeric measurements, is —

a)

Histogram

b)

Bullet

c)

Tree map

d)

Heatmap

77.

Select one: Which activities are part of the data cleaning process?

a)

Impute values, reduce noise, eliminate duplicates

b)

Normalize data, discretize data, create attributes

c)

Reduce dimension, reduce volume, balance data

d)

Normalize data, reduce noise, eliminate duplicates

78.

Select one. Data based on context refers to data suitable within a specific domain, and subject refers to data arranged according to the relevant subject. This data readiness characteristic is called

a)

Data granularity

b)

Data consistency

c)

Data relevancy

d)

Data accuracy

79.

Select one. Which of the following are statistical measures that describe the dispersion of data?

a)

Standard deviation and interquartile range

b)

Mode and variance

c)

Range and mean

d)

Quartiles and median

80.

A measurement scale used to determine the ranking of a particular group. In this ranking, only the order of objects is considered from the largest to the smallest or from the highest to the lowest. For example, students’ knowledge about Covid-19 (1 = poor, 2 = adequate, 3 = good). The data taxonomy for such an example is called

a)

Nominal

b)

Ordinal

c)

Interval

d)

Ratio

81.

In the Kimball approach, the commonly used data structure is

a)

XML

b)

Star Schema and Snowflake Schema

c)

3rd Normal Form (3NF)

d)

Hierarchical database