Mean and standard deviation can be worked out only if the data is on: Mean and standard deviation can be worked out only if the data is on: mcq given below:

Q. Mean and standard deviation can be worked out only if the data is on:

(a) Interval/ Ratio scale
(b) Dichomatous scale
(c) Nominal scale
(d) Ordinal scale

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Ans: (a) Interval/ Ratio scale  
 

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