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5 Forty concrete cubes were subjected to failure tests in a crushing machine. Failure loads were as follows: Load x (kN) 30-6 30-8 31-0 31-2 31-4 31-6 Frequency f 2 8 14 10 4 Calculate (a) the mean, (b) the standard deviation, (c) the mode and (d) the median of the set of results.

5 Forty concrete cubes were subjected to failure tests in a crushing machine. Failure loads were as follows: Load x (kN) 30-6 30-8 31-0 31-2 31-4 31-6 Frequency f 2 8 14 10 4 Calculate (a) the mean, (b) the standard deviation, (c) the mode and (d) the median of the set of results.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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6 The time taken by employees to complete an operation was recorded on 80 occasions: Time (min) 11-0 11-5 | 12-0| 12-5 10-0 10-5 13-0 Frequency f 4 8 14 22 19 10 3 (a) Determine (i) the mean, (ii) the standard deviation, (iii) the mode and (iv) the median of the set of observations. (b) State (i) the class interval, (ii) the lower boundary of the third class, (iii) the upper boundary of the seventh class.
Transcribed Image Text:6 The time taken by employees to complete an operation was recorded on 80 occasions: Time (min) 11-0 11-5 | 12-0| 12-5 10-0 10-5 13-0 Frequency f 4 8 14 22 19 10 3 (a) Determine (i) the mean, (ii) the standard deviation, (iii) the mode and (iv) the median of the set of observations. (b) State (i) the class interval, (ii) the lower boundary of the third class, (iii) the upper boundary of the seventh class.
5 Forty concrete cubes were subjected to failure tests in a crushing machine. Failure loads were as follows: Load x (kN) 30-6 30-8 31-0 31-2 31-4 31-6 Frequency f 2 8 14 10 4 Calculate (a) the mean, (b) the standard deviation, (c) the mode and (d) the median of the set of results.
Transcribed Image Text:5 Forty concrete cubes were subjected to failure tests in a crushing machine. Failure loads were as follows: Load x (kN) 30-6 30-8 31-0 31-2 31-4 31-6 Frequency f 2 8 14 10 4 Calculate (a) the mean, (b) the standard deviation, (c) the mode and (d) the median of the set of results.
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