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A student scores the following marks in five tests 45, 54, 41, 57, 43. His score is not known for the sixth test. If the mean score is 48 in the six tests, then the standard deviation of the marks in six tests is

A

(a) ` (100 ) / ( 3 ) `

B

(b) ` ( 10 ) / (3 ) `

C

(c) ` (10 )/ (sqrt 3 ) `

D

(d) ` (100 ) / (sqrt 3) `

Text Solution

AI Generated Solution

To solve the problem step by step, we can follow these instructions: ### Step 1: Calculate the total score for the six tests We know the mean score for the six tests is 48. The formula for mean is given by: \[ \text{Mean} = \frac{\text{Sum of all observations}}{\text{Total number of observations}} \] ...
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