Statistics Review

Front

What is the definition of mean in statistics?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Front

How do you find the median of a data set?

Back

To find the median, arrange the numbers in order and identify the middle value. If there is an even number of values, the median is the average of the two middle numbers.

Front

What are quartiles in a data set?

Back

Quartiles are values that divide a data set into four equal parts. The lower quartile (Q1) is the median of the lower half, and the upper quartile (Q3) is the median of the upper half.

Front

What is the range of a data set?

Back

The range is the difference between the maximum and minimum values in a data set.

Front

How do you calculate the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

What is a line plot?

Back

A line plot is a graph that displays data along a number line, showing the frequency of each value.

Front

What is the purpose of a box plot?

Back

A box plot visually represents the distribution of a data set, showing the median, quartiles, and any outliers.

Front

How do you calculate the average of a set of numbers?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified place value, such as the nearest whole number or tenth.