1.

What is the mean of 142, 143, 145, 158, 139?(a) 135.4(b) 145.4(c) 0.23(d) 135.5The question was asked during an online interview.My query is from Statistics topic in section Statistics of Mathematics – Class 10

Answer»

Right option is (b) 145.4

The BEST I can explain: Arithmetic MEAN = \(\frac {Sum \, of \, the \, OBSERVATIONS}{Number \, of \, observations}\)

= \(\frac {142+143+145+158+139}{5}\)

= 145.4



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