Prob/Stat Unit 1 and 2 Review

Front

What is the definition of relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations.

Front

What does it mean if data is symmetric?

Back

Symmetric data is data that is evenly distributed around a central point, meaning the left and right sides of the distribution are mirror images.

Front

What is the purpose of the y-axis in a graph?

Back

The y-axis represents the dependent variable in a graph, showing how it changes in response to the independent variable on the x-axis.

Front

What is the definition of standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values.

Front

How do you calculate joint relative frequency?

Back

Joint relative frequency is calculated by dividing the frequency of a specific category by the total number of observations.

Front

What is the difference between mean and median?

Back

Mean is the average of a set of numbers, while median is the middle value when the numbers are arranged in order.

Front

What is an example of misleading graph representation?

Back

A graph where the y-axis does not start at zero can exaggerate differences and mislead viewers.

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

What does it mean if a data set has a high standard deviation?

Back

A high standard deviation indicates that the data points are spread out over a wider range of values.

Front

How do you find the number of students within a specific range?

Back

Count the number of data points that fall within the specified range.