Back to 2.4 Sigma Notation and Calculating the Arithmetic Mean

2.4 Exercise 7

Avg difficulty 2.5

A city received the following rainfall for a recent year. What is the mean number of inches of rainfall the city received monthly, to the nearest hundredth of an inch? Use the table.

Month Rainfall in inches
January 2.21
February 3.12
March 4.11
April 2.09
May 0.99
June 1.08
July 2.99
August 0.08
September 0.52
October 1.89
November 2.00
December 3.06

OpenStax Introductory Business Statistics 2e, 2.4 Sigma Notation and Calculating the Arithmetic Mean, exercise 7

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Adapted from Introductory Business Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Business Statistics 2e. Imported at revision 50ec917.