Here is a sample of scores: 6, 8, 5, 1, 3, 7, 7, 10, 9, 4   A) What is the variance?  B) What is the standard deviation

A hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 7.1 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 6.1, 8.1, 9.1, 10.1, 7.1, 11.1, and 12.1 pounds. What is the sample standard deviation?

A sample consists of the following N scores 1,9,8,5,7 calculate the standard deviation

In a statistics class, 10 scores were randomly selected with the following results (mean = 71.5): 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 What is the standard deviation?

A developmental psychologist is interested in studying how long babies gaze at a photograph of a human face. To test this question, she shows a picture to a sample of six babies and records the length of their gaze in seconds. The data are as follows: 12, 17, 18, 20, 20, 29. Calculate the mean, median, mode, range, variance and standard deviation for the sample.

A. What is the standard deviation of this population? (2, 3, 6, 8, 11) B. What is the standard deviation of this sample? (3, 4, 5, 7, 8, 8, 9, 12)

Use the following set of numbers (6, 2, 4, 2, 8, 3, 10, 10, 2, 4) to determine the sum of squares  , sample standard deviation  , and population standard deviation  .

find the sample variance and standard deviation 20, 10, 2, 06, 08