1-Variable Stats & 2-Way Frequency Tables Review

Front

What is the definition of median in a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you determine the least popular color in a data set?

Back

To determine the least popular color, compare the frequency of each color in the data set and identify the one with the lowest count.

Front

What is the formula for calculating the interquartile range (IQR)?

Back

The IQR is calculated as Q3 - Q1, where Q3 is the third quartile and Q1 is the first quartile of the data set.

Front

What does the mean represent in a data set?

Back

The mean represents the average of a data set, calculated by summing all the values and dividing by the number of values.

Front

How do you find the minimum temperature in a data set?

Back

To find the minimum temperature, identify the smallest value in the data set.

Front

What is a two-way frequency table?

Back

A two-way frequency table displays the frequency counts of two categorical variables, allowing for the analysis of the relationship between them.

Front

What is the difference between a population and a sample?

Back

A population includes all members of a specified group, while a sample is a subset of the population used for analysis.

Front

How do you calculate the range of a data set?

Back

The range is calculated by subtracting the minimum value from the maximum value in the data set.

Front

What is the purpose of using quartiles in statistics?

Back

Quartiles divide a data set into four equal parts, helping to understand the distribution and spread of the data.

Front

What is the significance of the first quartile (Q1)?

Back

The first quartile (Q1) is the value below which 25% of the data falls, indicating the lower 25% of the data set.