University:
Eastern Kentucky University
Course:
STA 260 | Business Statistics
Academic year:

2020
Views:

383

Pages:

3
Author:

do3ran7ut

Bar Graph/Histogram Worksheet Name:_Solutions_ 1. A manager at Sobeys is interested in the distance Sobeys employees travel to work each day. She asks each employee how many kilometers the store is from his or her home and received the following answers: 1 18 4 9 9 2 7 16 11 18 6 3 4 12 8 7 15 5 1 8 12 15 8 9 4 13 4 6 2 14 2 17 5 10 7 6 1 18 11 3 9 14 5 4 2 5 5 2 10 6 In order to organize this data, complete the following Relative frequency distribution and construct a histogram for this data: Kilometres Frequency 0 up to 3 3 up to 6 6 up to 9 9 up to 12 12 up to 15 15 up to 18 18 up to 21 Total 8 12 10 8 5 4 3 50 Relative Frequency 16% 24% 20% 16% 10% 8% 6% 100% n=50 2k > n 26 = 64 so k = 6 is suggested number of classes. H-L / k gives class width. Class width is 18-1 / 6 = 2.8 so class width is 3 Note we add an additional class so we can include the value 18. Histogram Showing Distance Sobeys Employees Travel to Work each Day 14 12 10 8 6 4 2 0 0 up to 3 3 up to 6 6 up to 9 9 up to 12 12 up to 15 15 up to 18 18 up to 21 Number of Kilometers 2. Twenty five applicants to the Canadian Army are given a blood test to determine their blood type. The data set is: A O B A AB B O B O A B B O O O AB AB A O B O B O AB A Complete the following Relative frequency distribution and construct a bar chart for this data. Blood Types Frequency Relative Frequency A 5 20% B 7 28% O 9 36% AB 4 16% Total 25 100% Blood Type of 25 Canadian Army Applicants 10 9 8 7 6 5 4 3 2 1 0 A B O AB 3. Construct a Frequency Polygon from the data in problem 1 above.

Histogram Worksheet

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