Interquartile range, mean, median,mode, range

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is a measure of statistical dispersion, calculated as the difference between the third quartile (Q3) and the first quartile (Q1). It represents the range of the middle 50% of the data.

Front

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

Back

To calculate the mean, add all the numbers together and then divide by the total count of the numbers.

Front

What is the median in a data set?

Back

The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode of a data set?

Back

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

Front

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

Back

The range is found by subtracting the smallest number from the largest number in the set.

Front

Calculate the interquartile range of the following data: 17, 18, 18, 19, 20, 21, 21, 23, 25.

Back

The interquartile range is 4.

Front

What is the mean of the following numbers: 9, 8, 12, 6, 10?

Back

The mean is 9.

Front

What is the range of the following numbers: 5, 10, 15, 20?

Back

The range is 15 (20 - 5).

Front

Find the mode of the following numbers: 7, 14, 20, 3, 7, 14, 2, 14, 7.

Back

The modes are 7 and 14.

Front

Calculate the median for the following set of scores: 45, 69, 69, 87, 88, 92, 99, 100.

Back

The median is 87.5.