Math Problem Statement
An electric bill is an essential expense for young people who get their first apartment. The following is a list of Jordan's monthly electric bills for the past 10 months. $115, $150, $144, $126, $90, $90, $95, $110, $120, $88 Round your answers to the nearest cent. a. What is the mean monthly electric bill?
b. What is the range?
c. What is the variance?
d. What is the standard deviation?
Solution
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Math Problem Analysis
Mathematical Concepts
Descriptive Statistics
Mean
Range
Variance
Standard Deviation
Formulas
Mean = Sum of all values / Number of values
Range = Maximum value  Minimum value
Variance = (1/n) * sum((xi  mean)^2)
Standard Deviation = sqrt(Variance)
Theorems

Suitable Grade Level
Grades 912
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