Mean Median Mode Range and Quartiles

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 calculate the mean of the numbers 8, 12, 16, 20, 24?

Back

(8 + 12 + 16 + 20 + 24) / 5 = 16.

Front

What is the mode of a set of numbers?

Back

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

Front

Identify the mode from the following numbers: 3, 3, 6, 6, 9, 9, 12.

Back

The modes are 3 and 6, as they both appear most frequently.

Front

What is the median of a set of numbers?

Back

The median is the middle number in a sorted list of numbers. If there is an even number of observations, the median is the average of the two middle numbers.

Front

Find the median of the data set: 3, 6, 9, 12, 15, 18, 21.

Back

The median is 12, as it is the middle number in the sorted list.

Front

What is the range of a set of numbers?

Back

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

Front

Determine the range of the data set: 1, 3, 5, 7, 9.

Back

Range = 9 - 1 = 8.

Front

What are quartiles?

Back

Quartiles are values that divide a data set into four equal parts, with each part containing 25% of the data.

Front

How do you find the first quartile (Q1)?

Back

Q1 is the median of the first half of the data set.