(a) Use the Sample Variance Definition to find the variance and standard deviation of the data.

Perform each task, given the following sample data. (Round your answers to one decimal place.)

variance
standard deviation

(b) Use the Alternative Formula for Sample Variance to find the variance and standard deviation of the data.

variance
standard deviation

Solutions

Expert Solution


4	-3	9
8	1	1
7	0	0
4	-3	9
10	3	9
9	2	4

-------------------------------------------------------------------------------------------------


4	16
8	64
7	49
4	16
10	100
9	81

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Find the range, variance, and standard deviation for the given sample data, if possible. If the...

Find the range, variance, and standard deviation for the given sample data, if possible. If the measures of variation can be obtained for these values, do the results make sense? Biologists conducted experiments to determine whether a deficiency of carbon dioxide in the soil affects the phenotypes of peas. Listed below are the phenotype codes, where 1=smooth-yellow, 2=smooth-green, 3=wrinkled yellow, and 4=wrinkled-green. 2 1 3 2 3 1 4 3 2 2 2 3 2 2 2 2 1 2...

a. The standard deviation of a sample of data was 14. Find the variance. B. Given...

a. The standard deviation of a sample of data was 14. Find the variance. B. Given the sample data 5, 0, 7, 5, 9, and 6, find its range C. A new weight-loss program claims that participants will lose an average of more than 10 pounds after completing it. The data table shows the weights of five individuals before and after the program. 1 2 3 4 5 weight before 264 220 285 264 195 weight after 240 223 267...

Find the? range, variance, and standard deviation for the given sample data. Include appropriate units in...

Find the? range, variance, and standard deviation for the given sample data. Include appropriate units in the results. Listed below are the measured radiation absorption rates? (in W/kg) corresponding to various cell phone models. If one of each model is measured for radiation and the results are used to find the measures of? variation, are the results typical of the population of cell phones that are in? use? 1.46, 0.73, 0.91, 0.98, 1.46, 1.21, 1.24, 0.58, 0.63, 0.55, 0.71

Find the range, variance, and standard deviation for the given sample data. Include appropriate units in...

Find the range, variance, and standard deviation for the given sample data. Include appropriate units in the results. Listed below are the measured radiation absorption rates (in W/kg) corresponding to various cell phone models. If one of each model is measured for radiation and the results are used to find the measures of variation, are the results typical of the population of cell phones that are in use? 1.331.33 1.031.03 1.071.07 0.770.77 1.051.05 0.720.72 1.191.19 1.291.29 0.560.56 The range of...

Find the SS, the variance, and the Standard Deviation of Sample A Please be sure to...

Find the SS, the variance, and the Standard Deviation of Sample A Please be sure to show your entire work. For each step. Sample A 8 10 18 1 6 11 9 10 10 7

. Use StatsDisk Find the Mean, Median, Variance and Standard Deviation of the data below? Females...

. Use StatsDisk Find the Mean, Median, Variance and Standard Deviation of the data below? Females 1-6 2-1 3-1 4-4 5-6 6-8 7-2 8-2 9-4 10-5 11-7 12-10 13-6 14-3 15-2 16-1 17-Something ........... 18-1 19-2 20-3 21-5 22-7 23-8 24-2 25-3 26-2 27-2 28-4 29-3 30-4 31-6 32-1 33-1 34-6 35-4 36-4 37-3 38-1 39-1 40-5 41-8 42-1 43-7 44-9 45-2 46-9 47-7 48-8 49-4 ............ 50-2 51-1 52-Sometimes 53-1 54-2 55-3 56-3 57-3 58-2 59-2 60-4 61-5 62-5...

(1). Find the variance and standard deviation of the response time data. Treat it as a...

(1). Find the variance and standard deviation of the response time data. Treat it as a sample from a larger population. [0.12,0.3, 0.35,0.37,0.44,0.57,0.61,0.62,0.71,0.8,0.88,1.02,1.08,1.12,1.13,1.17,1.21,1.23,1.35,1.41,1.42,1.42,1.46,1.5,1.52,1.54,1.6,1.61,1.68,1.72,1.86,1.9,1.91,2.07,2.09,2.16,2.17,2.2,2.29,2.32,2.39,2.47,2.6,2.86,3.43,3.43,3.77,3.97,4.54,4.73] (2). Find the interquartile range and the median absolute deviation for the response time data. (3). In the response time data, replace the value X40=2.32 by 232.0. Recalculate the standard deviation, the interquartile range and the median absolute deviation and compare with the answers from problems 1 and

#1 Compute the (sample) variance and standard deviation of the data sample. (Round your answers to...

#1 Compute the (sample) variance and standard deviation of the data sample. (Round your answers to two decimal places.) −1, 9, 9, 2, 11 variance standard deviation #2 Compute the (sample) variance and standard deviation of the data sample. (Round your answers to two decimal places.) −8, 3, 6, 8, 0, 6 variance standard deviation #3 Compute the (sample) variance and standard deviation of the data sample. (Round your answers to two decimal places.) 2.8, −3.2, 2.5, −0.2, −0.2 variance...

Find the sample variance and standard deviation. 23, 16, 3, 8, 11

Subjects