Mean, Median, Mode, Range, Interquartile Range

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 data set?

Back

To find the median, arrange the numbers in order from least to greatest 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 the mode of 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

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

What is the interquartile range (IQR)?

Back

The interquartile range is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the middle 50% of the data.

Front

How many equal parts do quartiles divide a data set into?

Back

Quartiles divide a data set into 4 equal parts, each representing 25% of the data.

Front

What is the first step in finding the interquartile range?

Back

The first step is to arrange the data set in ascending order.

Front

If a data set has the numbers 3, 7, 8, 12, 14, what is the median?

Back

The median is 8, as it is the middle number in the ordered list.

Front

What is the mode of the following data set: 2, 3, 4, 4, 5, 5, 5, 6?

Back

The mode is 5, as it appears most frequently.

Front

Calculate the range of the following data set: 10, 15, 20, 25, 30.

Back

The range is 30 - 10 = 20.