Standard Deviation Answers

The number of cars sold at a dealership over several weeks is given below.14, 23, 31, 29, 33What is the standard deviation for this set of population data?Standard deviation:

A scientist collected two sample sets of snowfall data. Which statistic should he use to compare the spread of the two sets of data?

Which formula is used to calculate the standard deviation of sample data?

Abby is collecting rainfall data. She finds that one value of the data set is a high-value outlier. Which statement must be true?

A missing data value from a set of data has a z-score of –2.1. Fred already calculated the mean and standard deviation to be and . What was the missing data value? Round the answer to the nearest whole number.

The monthly mean salaries and standard deviations of four college students are given below.StudentMeanStandard DeviationClarissa$34512.53Abi$5988.99Kaila$81215.29Shenika$2087.67Which statement must be true?

The weekly salaries of a sample of employees at the local bank are given in the table below.EmployeeWeekly SalaryAnja$245Raz$300Natalie$325Mic$465Paul$100What is the variance for the data?Variance:

Mrs. Rodrigues wants to compare the spread of the test scores of her two biology classes. Which statistic should she use?

The mean ages with standard deviations of four swim teams at a swim club are given below.TeamMeanStandard DeviationStars164.1Dolphins181.5Giants140.3Mackerels152.3Which statement is most likely to be true?