The following data give the hourly wage rates (Rands) for a sample of 20 workers selected from a large company. 12.50 9.45 13.85 7.25 8.70 14.60 11.75 14.50 10.80 12.45 7.50 15.90 9.75 11.50 13.30 6.25 15.50 12.80 5.35 9.50 (i) Using the raw data, determine the range. (ii) What percentage of these workers is getting paid in excess of R 12.00 per hour? (iii) Explain why the data is continuous.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
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The following data give the hourly wage rates (Rands) for a sample of 20 workers selected from a large
company.
12.50 9.45 13.85 7.25 8.70 14.60 11.75 14.50 10.80 12.45
7.50 15.90 9.75 11.50 13.30 6.25 15.50 12.80 5.35 9.50

(i) Using the raw data, determine the range.

(ii) What percentage of these workers is getting paid in excess of R 12.00 per hour?

(iii) Explain why the data is continuous.

(iv) Group the data into a frequency distribution with a lowest class lower limit of R 5.00 and a class
width of R 2.00.

(v) Determine the mean wage rate using the raw data.

 

 

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