
Understanding Data Trends and Errors
Computers
9th Grade
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a common data visualisation technique used to display the distribution of a dataset?
Line Graph
Histogram
Pie Chart
Scatter Plot
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary purpose of identifying outliers in a dataset?
To increase the dataset size
To improve data accuracy
To make data entry easier
To reduce data redundancy
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statistical analysis method is used to determine the relationship between two variables?
Mean
Median
Correlation
Mode
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in data cleaning best practices?
Removing duplicates
Validating data accuracy
Identifying missing values
Organising data
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a trend in data mining?
Manual data entry
Predictive analytics
Paper-based records
Data hoarding
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a common data entry error that can affect data quality?
Consistent formatting
Typographical errors
Automated data capture
Data validation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following can lead to misinterpreted data?
Clear data visualisation
Accurate data collection
Ambiguous data labels
Consistent data formatting
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