The mean of 50 readings of a variable was 7.43 and their S.D. was 0.28. The following ten additional readings be- came available: 6.80, 7.81, 7.58, 7.70, 8.05, 6.98, 7.78, 7.85, 7.21 and 7.40. If these are included with original 50 readings find (i) the mean, (ii) the standard deviation of the whole set of 60 readings
The mean of 50 readings of a variable was 7.43 and their S.D. was 0.28. The following ten additional readings be- came available: 6.80, 7.81, 7.58, 7.70, 8.05, 6.98, 7.78, 7.85, 7.21 and 7.40. If these are included with original 50 readings find (i) the mean, (ii) the standard deviation of the whole set of 60 readings
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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