The following table gives the number of family members of a sample of employees in a company: Number of family members Number of employees 3 8 4 12 24 28 7 18 if the mean number of family members is 5.4 members. The variance of family members is: Select one: O 1.46 members O 1.21 members O 4.2 families O 2 families

Q: Estimate the mean and variance for these sets of numbers: 20, 21, 12,16,24,24, 23,15, 20, 19, 25,…

A:

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A: Given data set is X={6,6,5,7,5,4,8,5}Arrange the data set in ascending order4, 5, 5, 5, 6, 6, 7,…

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Q: Find the sample variance of the following data set.  6,12, 11, 11

A: Solution : Given : n= 4 Let, X = 6, 12, 11, 11 Sample variance is calculated by using following…

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Q: Find the variance for the set of data: 27, 33, 20, 25, 25. The variance is ***

A: Solution: x x2 27 729 33 1089 20 400 25 625 25 625 --- --- ∑x =130 ∑x2 =34685

Q: - and 3 4.8 and 3.5 4 and 3.33 18 or

A: Given Data = ,1,7,3,3,6,4

Q: Find the sample variance of the following set of data: 4,12,7,5

A:

Q: Find the variance for the following sample data: 8,8,9,12,11,14,18,7,13,16

A: Answer: From the given data, Given sample data is, 8,8,9,12,11,14,18,7,13,16 Number of samples (n) =…

Q: Find the sample variance of the following set of data: 8, 7, 11, 10, 10, 8.

A: Given data, 8, 7, 11, 10, 10, 8.   Sample variance=?

Q: The following data set represents the ages of 6 of Angela's 26 grandchildren. Find the variance for…

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Q: Consider a data set containing the following values: 80, 94, 93, 106, 91, 90, 96, 99 The mean of…

A: Given: n = 8 Mean = 93.625 Formula Used: Sample variance s2 = ∑Xi-X2n-1 Sample standard deviation s…

Q: onsider a data set: 1, 2, 5, 6, 7, 6. Find the range, variance, and standard deviation for this data…

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Q: The table below shows the age distribution of a sample of 150 students at UCC. Find an estimate of…

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Q: The police lieutenant in charge of the traffic division has reviewed the number of traffic citations…

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A: The cumulative frequencies are obtained in the below table:

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Q: Consider the following sample data: 6, 10, 4, 3, 7, 9, 21, and 14. What is the variance? Select…

A: For the given data   What is the variance?

Q: The table below shows the overtime hours of the employees during a week. Overtime hours 0 1 2 3 4 5…

A:

Q: The following are final grades (in terms of percentages) from a class of 20 students. 70 75 70 84 90…

A: Arrange the data in ascending order as follows:

Q: data set contains the observations 3, 8, 4, 5, 3, 4, 6. A. Find the sample mean. B. Find the…

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Q: The following table shows the number of hours per day a sample of 77 people spend watching TV.…

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Q: The variance for the sample of student marks given in following table is: number marks of student…

A:

Q: Which of the following best describes the variance for this sample of observations: 2.3, 4.5, 6, 8…

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Q: a. Calculate the variance of the scores for each woman. b. Are the scores for the younger woman more…

A: Let X denote the memory performance scores of the younger woman   and Y denote the memory…

Q: What is the variance for the following population of scores? Scores: 2, 2, 2, 2 Group of answer…

A: The mean of the score can be calculated as: