Question

Find the mean,median and mode of the following numbers - 40,40,30,37,26,23,38,31,38
It's a bit urgent​

Answer 1

Answer:

Mean = 29.4 (bar over 4)

Median = 37

Mode = 38, 40.

Explanation:

Data in array:

23, 26, 30, 31, 37, 38, 38, 40, 40.

Now,

$\bf{\overline{x}} = \rm{\frac{1}{n} \sum_{i=i}^{n} x_{i}}$

=> x bar = (23 + 26 + 30 + 31 + 37 + 38 + 40 + 40)/(9)

=> x bar = 265/9 = 29.4 (bar over 4)

Now, median = (n + 1)/2th term = 5th term = 37.

[n = odd]

Mode = Highest number of observations = 38, 40.

. .

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