Mean Median Mode Range IQR

Front

What is the mean of a set of numbers?

Back

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

Front

How do you find the median of a set of numbers?

Back

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

Front

What is mode in a data set?

Back

The mode is the number that appears most frequently in a data set. A set may have one mode, more than one mode, or no mode at all.

Front

Define range in statistics.

Back

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

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the upper quartile (Q3) and the lower quartile (Q1) in a data set, representing the middle 50% of the data.

Front

How do you calculate Q1 in a data set?

Back

To find Q1, arrange the data in ascending order and find the median of the lower half of the data.

Front

How do you calculate Q3 in a data set?

Back

To find Q3, arrange the data in ascending order and find the median of the upper half of the data.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) / (Number of values)