The following are the daily pocket expenses (in rupees) of eight students in a hostel…

MATHEMATICS · Multi-part · A Level · Mathematics · Data presentation and interpretation · Data presentation and interpretation

Problem

The following are the daily pocket expenses (in rupees) of eight students in a hostel on a particular day: 48, 55, 50, 60, 52, 47, 58, 51. Answer the following. (i) Find the mean daily expense. (ii) Calculate the variance of the expenses. (iii) Hence determine the standard deviation, correct to two decimal places.

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