The following data values represent the number of homeruns a baseball player hit each year during his 25-year baseball career. Complete parts a through d below. 34 26 16 12 27 27 41 27 41 22 29 39 20 32 28 48 49 33 23 38 40 41 36 26 37 www C Calculate the standard deviation of these data values. $= 9.43 (Round to two decimal places as needed.) b. Group this data into four classes with class boundaries of 10-under 20, 20-under 30, 30-under 40, and 40-under 50. Group Frequency 10-under 20 20-under 30 30-under 40 40-under 50 7 c. Calculate the approximate mean of these grouped data values. **(Round to one decimal place as needed.) Calculate the approximate standard deviation of these grouped data values. (Round to two decimal places as needed.)

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The following data values represent the number of homeruns a baseball player hit each year during his 25-year
baseball career. Complete parts a through d below.
34 26 16 12 27 27 41 27 41 22 29 39
20 32 28 48 49 33 23 38 40 41 36 26 37
Calculate the standard deviation of these data values.
$= 9.43 (Round to two decimal places as needed.)
b. Group this data into four classes with class boundaries of 10-under 20, 20-under 30, 30-under 40, and 40-under
Group
Frequency
MOMEN
56
10-under 20 20-under 30 30-under 40 40-under 50
c. Calculate the approximate mean of these grouped data values.
%20 (Round to one decimal place as needed.)
Calculate the approximate standard deviation of these grouped data values.
(Round to two decimal places as needed.)
Transcribed Image Text:The following data values represent the number of homeruns a baseball player hit each year during his 25-year baseball career. Complete parts a through d below. 34 26 16 12 27 27 41 27 41 22 29 39 20 32 28 48 49 33 23 38 40 41 36 26 37 Calculate the standard deviation of these data values. $= 9.43 (Round to two decimal places as needed.) b. Group this data into four classes with class boundaries of 10-under 20, 20-under 30, 30-under 40, and 40-under Group Frequency MOMEN 56 10-under 20 20-under 30 30-under 40 40-under 50 c. Calculate the approximate mean of these grouped data values. %20 (Round to one decimal place as needed.) Calculate the approximate standard deviation of these grouped data values. (Round to two decimal places as needed.)
Expert Solution
Step 1:- (b)

For the given class intervals, we count the frequency from the above data set and create a frequency table. 

First we arrange the data in ascending order so it would be easy to count the frequency,

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