Determine the population variance and standard deviation for the following data by using the original formula. Class
Question:
Determine the population variance and standard deviation for the following data by using the original formula.
Class f
20–under 30 ........ 7
30–under 40 ........11
40–under 50 ........18
50–under 60 ........13
60–under 70 ........ 6
70–under 80 ........ 4
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Class f M fM 2030 7 25 175 3040 11 35 385 4050 18 45 810 5060 13 55 715 6070 ...View the full answer
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Related Book For 
Business Statistics for Contemporary Decision Making
ISBN: 978-0470910184
6th Edition
Authors: Ken Black
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