1.

Find the number of observations if the sum of the observations is 37.4 and the mean of the observations is 6.23?(a) 9(b) 7(c) 6(d) 4This question was addressed to me in an online quiz.My question is taken from Statistics in section Statistics of Mathematics – Class 10

Answer»

The correct option is (c) 6

Easiest EXPLANATION: ARITHMETIC mean = \(\FRAC {SUM \, of \, the \, observations}{Number \, of \, observations}\)

6.23 = \(\frac {37.4}{Number \, of \, observations}\)

Number of the observations = \(\frac {37.4}{6.23}\)

= 6



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