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Reviewing College Statistics Vocabulary And Concepts Flashcards | StudBud
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Reviewing College Statistics Vocabulary And Concepts
Reviewing College Statistics Vocabulary And Concepts
20 terms
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Questions
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Answers
1
What is a pie chart best used for?
Showing changes over time
Plotting data points on a grid
Displaying parts of a whole as percentages
Comparing frequency distributions
2
What does the empirical rule state about normal distributions?
Data falls randomly within any range
About 68%, 95%, and 99.7% of data lie within 1 2 and 3 standard deviations
No data lies beyond 3 standard deviations
All data lies within 2 standard deviations
3
What does the Empirical Rule state about data within 2 standard deviations of the mean (in a normal distribution)?
About 50% of the data falls there
About 95% of the data falls there
About 68% of the data falls there
All of the data falls there
4
What is a permutation?
A type of distribution
The count of repeated values
An arrangement of objects where order matters
A list of unordered data
5
What does standard deviation measure?
The average value
The total range of all values
How spread out the data values are from the mean
The center of the data
6
What shape is a normal distribution?
Skewed to the right
Symmetrical and bell-shaped
Stepped
Square
7
How do you find probabilities under a normal distribution?
Add all standard deviations
Multiply all values together
Use frequency tables
Use the Z-table to find the area under the curve
8
What is the histogram used for?
To calculate averages
To display frequency of data using bars
To show percentages of a circle
To list numbers in a table
9
What is probability?
The average of outcomes
The measure of how likely an event is to occur
A guess based on nothing
The frequency of a variable
10
What does a histogram display?
The total number of outcomes
Connections between two variables
The frequency of data in intervals using bars
Data in a circle format
11
What is a Z-score?
The number of standard deviations a value is from the mean
A type of variable
The average of two variables
A graphing function
12
What is the expected value in probability?
The most frequent number
The smallest possible result
The sum of all outcomes times their probabilities
The middle value of a list
13
What is the mode in a data set?
The difference between the highest and lowest values
The middle number in a sorted list
The average of all numbers
The number that appears most frequently
14
What is a discrete variable?
A variable with distinct, countable values
A continuous measure
A variable with an infinite number of values
A variable that changes over time
15
What is the addition rule in probability?
P(A∪B)=P(B)+P(A∩B)
P(A∪B)=P(A∩B)−P(A)
P(A∪B)=P(A)+P(B)−P(A∩B)
P(A∪B)=P(A)⋅P(B)
16
What is a scatter plot?
A pie chart showing parts of a whole
A line graph showing trends
A table that shows frequencies
A graph showing the relationship between two variables
17
What is a variable in statistics?
A fixed value that never changes
A symbol used in only algebraic expressions
A characteristic that can take on different values
A type of constant
18
What is a probability distribution?
A histogram
A function that shows the probabilities of outcomes
A list of measurements
A random experiment
19
What is the probability of flipping a fair coin and getting heads?
2
0.5
0.25
1
20
Which is a correct classification level of data?
Ordinal
Circular
Mixed
Comparative
