Math Problem Statement

Waiting times​ (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of​ data, then compare the variation. Bank A​ (single line): 6.5 nbsp 6.6 nbsp 6.7 nbsp 6.9 nbsp 7.2 nbsp 7.3 nbsp 7.5 nbsp 7.7 nbsp 7.7 nbsp 7.7

Bank B​ (individual lines): 4.3 nbsp 5.4 nbsp 5.7 nbsp 6.2 nbsp 6.8 nbsp 7.6 nbsp 7.8 nbsp 8.6 nbsp 9.3 nbsp 9.9 Question content area bottom Part 1 The coefficient of variation for the waiting times at Bank A is    enter your response here​%. ​(Round to one decimal place as​ needed.)

Solution

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Math Problem Analysis

Mathematical Concepts

Statistics
Coefficient of Variation
Standard Deviation
Mean

Formulas

Coefficient of Variation (CV) = (Standard Deviation / Mean) × 100

Theorems

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Suitable Grade Level

Grades 9-12