NEW
Font size
WorksheetsIntroduction to Statistics
Total questions: 41
Worksheet time: 21mins
In rule based AI, the
Rules are generated by human
Rules are generated by machines
Rules are generated by software
None of the above
Regression is used
When the target variable is discrete
When the target variable is categorical
When the target variable is continuous
All of the above
Clustering is an example of
Supervised Machine learning
unsupervised machine learning
semi-supervised machine learning
None of the above
Following is an example of discrete variable
Grades
Age
Weight
All of the above
Following is an example of continuous variable
Weight
No of students
Grades
None of the above
Following is an example of Rule based AI
Industrial robots
Alexa
Recommendation engine
None of the above
When the machine performs the cognitive functions such as decision making, problem solving where the humans are good at, we call it _______
Strong AI
Weak AI
Artificial intelligence
Hybrid AI
Amazon Echo is an example of
Strong AI
Hybrid AI
Weak AI
None of the above
In ML based AI
Rules are known
Rules are unknown
Rules are generated by human
None of the above
Classification is used
When the output variable is discrete
When the output variable is categorical
When the output variable is ordinal
All of the above
In simple linear regression
There is one dependent and one independent variable
There are multiple independent variable
There are multiple dependent variables
None of the above
Histogram is used
To check the distribution of the data
To normalize the data
To standardize the data
None of the above
How you check the spread of the data
Variance
Std. Deviation
IQR
All of the above
What is statistics?
Study of past events
Science of collecting and analyzing data
Study of earth
Collection of images
What is the universal set in statistics called?
Sample
Group
Population
Collection
What is a 'sample' in statistics?
Full data set
Subset of population
Data from one group only
No data
Which is NOT a type of data?
Numerical
Alphabetical
Categorical
Both A and C
Nominal data is best described as:
Categorical with order
Numerical and discrete
Categorical without order
Always binary
Which is an example of ordinal data?
Gender
City name
Grades in class
Country
Continuous data:
Has finite values
Changes with time, infinite possible values
Only numbers from 1-10
Is always categorical
What are descriptive statistics used for?
Making predictions
Organizing and summarizing data
Data visualization only
None of the above
Inferential statistics are used to:
Visualize data
Summarize large data
Make inferences about population from sample
Only calculate mean and median
Which is NOT a measure of central tendency?
Mean
Median
Variance
Mode
‘Mean’ is:
The value that appears most
The sum of values divided by count
The middle value
The difference of highest and lowest
The median of 3, 5, 1 is:
1
3
4
5
Mode refers to:
The largest value
The smallest value
The value appearing most frequently
The average value
Variance shows:
The most common data
How data points spread around the mean
The sum of all values
The code of data
Standard deviation is:
Always same as mean
Square of variance
Square root of variance
Product of mean and mode
Population variance divides by:
n-1
n
2
0
What does CV (coefficient of variation) measure?
Absolute variance
Relative variability
Type of data
Data units only
Descriptive statistics include:
Mean, median, mode
Regression analysis
Estimation of parameters
Hypothesis testing
Which of the following best defines inferential statistics?
Organizing data into tables
Drawing conclusions from sample data about the population
Visualizing data using bar charts
Identifying outliers in data
In supervised machine learning, which of the following techniques is used when the output variable is continuous?
K-Means Clustering
Classification
Regression
Association Mining
What does standard deviation measure?
The total sum of values
Frequency of a variable
Spread of data points around the mean
Position of median
Which measure is used to compare the spread of two different datasets with different units?
Variance
Mean
Coefficient of Variation
Mode
What is an example of ordinal categorical data?
Gender
City
Movie ratings
Temperature
Which AI type is designed for a specific task and lacks general thinking ability?
Hybrid AI
Strong AI
Rule-based AI
Weak AI
What is the purpose of the np.linspace(0, 20, 4) function in NumPy?
Generate 4 random integers between 0 and 20
Create 4 evenly spaced values from 0 to 20
Create a 4x4 array of 0s
None of the above
What is the purpose of hypothesis testing in statistics?
To summarize data
To make predictions
To determine if there is enough evidence to support a claim
To visualize data trends
Which of the following is a characteristic of a continuous variable?
It is limited to specific categories
It cannot be measured
It is always whole numbers
It can take any value within a range
What does a box plot represent?
Only the mean and median of the data
Distribution of data based on five summary statistics
Frequency of each data point
Correlation between two variables
