# Frequency Distribution and Electricity Cost

See the attached file.

The following frequency distribution reports the electricity cost for a sample of 50 two bedroom apartments in Albuquerque, New Mexico during the month of May last year.

Electricity Costs Frequency

$80 up to $100 3

100 up to 120 8

120 up to 140 12

140 up to 160 16

160 up to 180 7

180 up to 200 4

Total 50

A. Estimate the mean cost.

B Estimate the Standard Deviation

C. Use the Empirical Rule to estimate the proportion of costs within two standard deviations

What are these limits?

https://brainmass.com/statistics/dispersion-and-spread-of-data/frequency-distribution-electricity-cost-330429

#### Solution Summary

The solution determines the frequency distribution and electricity cost.

$2.19