The value of this expression (∑xi²) used in statistics for mean, variance and standard is equal to 59.
What is a mean?
A mean is also referred to as an arithmetic average and it can be defined as a ratio of the sum of the total number in a data set (population) to the frequency of the data set.
This ultimately implies that, a mean score is an average score and it can be calculated by dividing the total number of scores obtained by total number of students that took an examination (test).
How to calculate the mean?
Mathematically, the mean of a data set can be calculated by using this formula:
Mean = F(x)/n
In this exercise, you're required to only determine the value of sample mean (∑xi²) and this can be calculated as follows:
∑xi² = 3² + 6² + 2² + 3² + 1²
∑xi² = 9 + 36 + 4 + 9 + 1
∑xi² = 59.
Read more on mean here: https://brainly.com/question/9550536
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