Calculate the mean for samples where a. n=10, Σx=85. b. n=16, Σx=400. c. n=45, Σx=35. d. n=18,Σx=242.

Question
Fractions
asked 2021-02-19
Calculate the mean for samples where a. n=10, \(\displaystyleΣ{x}={85}.{b}.{n}={16},Σ{x}={400}.{c}.{n}={45},Σ{x}={35}.{d}.{n}={18},Σ{x}={242}\).

Answers (1)

2021-02-20
The mean is \(\displaystyle\frac{{Σ{x}}}{{n}}\)
a)Here the mean is \(\displaystyle\frac{{85}}{{10}}={8.5}\)
b)Here the mean is \(\displaystyle\frac{{400}}{{16}}={25}\)
c)Here the mean is \(\displaystyle\frac{{35}}{{45}}=\frac{{7}}{{9}}\)
d)Here the mean is \(\displaystyle\frac{{242}}{{18}}=\frac{{121}}{{9}}\)
0

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