Statistics Review

Front

What is the median of 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 find the median of an odd set of numbers?

Back

To find the median of an odd set of numbers, arrange the numbers in ascending order and select the middle number.

Front

How do you find the median of an even set of numbers?

Back

To find the median of an even set of numbers, arrange the numbers in ascending order and calculate the average of the two middle numbers.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you calculate the range?

Back

To calculate the range, subtract the smallest number in the data set from the largest number.

Front

What is a data set?

Back

A data set is a collection of related data points or values, often organized in a table or list.

Front

What does it mean for data to be skewed?

Back

Skewed data is data that is not symmetrical and has a tail on one side. It can be positively skewed (tail on the right) or negatively skewed (tail on the left).

Front

What is a frequency table?

Back

A frequency table is a table that displays the number of times each value occurs in a data set.

Front

What is the mode of a data set?

Back

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

Front

How do you find the mode?

Back

To find the mode, identify the number that occurs most often in the data set. If no number repeats, there is no mode.