# Question

The following table lists six pairs of m and f values.

Calculate the value of each of the following:

a. ∑f

b. ∑m2

c. ∑mf

d. ∑m2f

Calculate the value of each of the following:

a. ∑f

b. ∑m2

c. ∑mf

d. ∑m2f

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