Question

Write the formula for the mean water bill for the first 6 months of the year using sigma notation and determine that mean. Round your answer to the nearest cent.

A) Σ(xi)/6
B) Σ(xi)/12
C) Σ(xi)/24
D) Σ(xi)/36

Answer 1

The formula for the mean water bill for the first 6 months of the year using sigma notation is A) Σ(xi)/6. To determine the mean water bill, you would sum all the values for the water bills for the first 6 months of the year and divide that sum by 6.

Step-by-step explanation:

The formula for the mean water bill for the first 6 months of the year using sigma notation is A) Σ(xi)/6.

To determine the mean water bill, you would sum all the values for the water bills for the first 6 months of the year and divide that sum by 6. For example, if the water bills for the first 6 months are $50, $70, $60, $80, $75, and $65, the mean water bill would be ($50 + $70 + $60 + $80 + $75 + $65) / 6 = $68.33 (rounded to the nearest cent).