Severity: Warning

Message: count(): Parameter must be an array or an object that implements Countable

Filename: controllers/calculator.php

Line Number: 37

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Mean = Sum of all numbers / Number of numbers

Mean = (12 + 28 + 11 + 5 + 9 + 32 + 15) / 7

Mean = 112 / 7

Mean = 16

To find the median the terms should be arranged in increasing or decreasing order

Increasing order: 5, 9, 11, 12, 15, 28, 32

Median is the middle number. Hence median is 12.

Mode is the number which occurs most often. Here no number is repeating. Hence there is no mode for this given data.

As the number of numbers is 8 (even), we will have two middle numbers (4

find the average of middle numbers.

Median = (5 + 5) / 2 = 10 / 2 = 5

Hence range = 10 – 1 = 9