# Question: For each data set a Find the mean b Find the standard

For each data set:

(a) Find the mean.

(b) Find the standard deviation, treating the data as a sample.

(c) Find the standard deviation, treating the data as a population.

(d) What does this exercise show about the two formulas?

Data Set A: 6, 7, 8

Data Set B: 4, 5, 6, 7, 8, 9, 10

Data Set C: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13

(a) Find the mean.

(b) Find the standard deviation, treating the data as a sample.

(c) Find the standard deviation, treating the data as a population.

(d) What does this exercise show about the two formulas?

Data Set A: 6, 7, 8

Data Set B: 4, 5, 6, 7, 8, 9, 10

Data Set C: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13

## Relevant Questions

In fuel economy tests in city driving conditions, a hybrid vehicle's mean was 43.2 mpg with a standard deviation of 2.2 mpg. A comparably sized gasoline vehicle's mean was 27.2 mpg with a standard deviation of 1.9 mpg. Which ...(a) By Chebychev's Theorem, at least how many students in a class of 200 would score within the range μ ± 2σ ? (b) By the Empirical Rule, how many students in a class of 200 would score within the range μ ± 2σ ? (c) ...CitiBank recorded the number of customers to use a downtown ATM during the noon hour on 32 consecutive workdays. (a) Use Excel or MegaStat to sort and standardize the data. (b) Based on the Empirical Rule, are there ...Days on the market are shown for the 36 most recent home sales in the city of Sonando Hills. (a) Calculate the mean, median, and mode. (b) Is the distribution skewed? Explain. (c) Is the mode a useful measure of center for ...Find the data value that corresponds to each of the following z-scores. a. Final exam scores: Allison's z-score = 2.30, μ = 74, σ =7 b. Weekly grocery bill: James' z-score = –1.45, μ = $53, σ = $12 c. Daily video game ...Post your question