Lesson: Variance and Standard Deviation

In this lesson, we will learn how to find and interpret the variance and the standard deviation.

Sample Question Videos

Q1:

Calculate the standard deviation of the values 45, 35, 42, 49, 39, and 34. Give your answer to 3 decimal places.

Q2:

If for a set of 6 values equals 25, find the standard deviation of the set, and round the result to the nearest thousandth.

Q3:

The table shows the distribution of goals scored in the first half of a football season.

Number of Goals	0	1	3	4	6
Number of Matches	5	2	7	7	4

Find the standard deviation of the number of goals scored. Give your answer to three decimal places.

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