About this Study Set
This study set covers Statistics & Probability through
18 practice questions.
Explore the fundamental concepts of data analysis and the mathematical laws of chance used in modern science and mathematics. Every question includes the correct answer so you can learn as you go — pick any format above to get started.
Questions & Answers
Browse all 18 questions from the
Foundations of Statistics and Probability study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
In statistics, what is the 'mean' of a data set?
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A
The most frequent value
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B
The middle value
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C
The average of all values
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D
The difference between values
2
What is the term for the middle value in a data set when the numbers are listed in order?
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A
Mean
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B
Mode
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C
Range
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D
Median
3
Which statistical term describes the value that appears most frequently in a data set?
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A
Mode
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B
Median
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C
Standard Deviation
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D
Outlier
4
In probability theory, what is the numerical range of the probability scale?
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A
-1 to 1
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B
0 to 100
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C
0 to 1
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D
1 to 10
5
What is the probability of an event that is considered mathematically impossible?
6
Which term refers to the set of all possible outcomes of a probability experiment?
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A
Event space
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B
Sample space
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C
Frequency table
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D
Dataset
7
What is the probability of rolling a 4 on a standard, fair six-sided die?
8
What is the result of subtracting the smallest value from the largest value in a data set?
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A
Variance
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B
Sum
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C
Mean
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D
Range
9
Which term describes a data point that is significantly distant from the other observations in a set?
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A
Median
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B
Mode
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C
Outlier
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D
Variable
10
What is the probability of flipping a fair coin and it landing on 'heads'?
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A
0.25
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B
1.0
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C
0.5
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D
0.75
11
Which type of data is descriptive and categorized by traits or labels rather than numbers?
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A
Quantitative
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B
Qualitative
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C
Discrete
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D
Continuous
12
What does a probability of 1 indicate about an event?
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A
It is impossible
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B
It is unlikely
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C
It is equally likely
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D
It is certain to occur
13
In statistics, what is a survey that collects data from every single member of a population called?
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A
Sample
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B
Poll
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C
Census
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D
Experiment
14
Which type of graph uses bars to represent the frequency of data grouped into continuous intervals?
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A
Pie chart
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B
Scatter plot
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C
Histogram
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D
Line graph
15
What are events called when the outcome of the first event does not affect the outcome of the second?
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A
Dependent events
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B
Independent events
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C
Mutual events
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D
Compound events
16
What statistical measure is used to quantify the amount of variation or dispersion in a set of data values?
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A
Standard deviation
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B
Mean
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C
Median
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D
Mode
17
Which type of data can only take specific, separate numerical values, such as the number of students in a class?
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A
Continuous data
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B
Discrete data
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C
Qualitative data
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D
Nominal data
18
What is the sum of the probabilities of all possible outcomes in a single sample space?
