Question

Mean median and mode for 12,14,15,18,18,20,22,25,30

Answer 1

Answer: The mean is the average of the numbers. To calculate the mean, you add up all the numbers and then divide by the number of numbers. In this case, the mean is (12 + 14 + 15 + 18 + 18 + 20 + 22 + 25 + 30) / 9 = 19.44.

The median is the middle number when the numbers are arranged in ascending order. If there is an odd number of numbers, the median is the middle number. If there is an even number of numbers, the median is the average of the two middle numbers. In this case, since there are 9 numbers and 9 is an odd number, the median is the middle number when the numbers are arranged in ascending order: 12, 14, 15, 18, 18, 20, 22, 25, 30. So the median is 18.

The mode is the number that appears most often in a set of numbers. In this case, the mode is 18 because it appears twice while all other numbers appear only once.

So for this set of numbers: mean = 19.44, median = 18, and mode = 18.

Answer 2

See below!

Explanation:

Given data:

12,14,15,18,18,20,22,25,30

Mean:

Mean = Sum of data / No. of data

Mean = 12+14+15+18+18+20+22+25+30 / 9

Mean = 174 / 9

Mean = 19.33

Median:

• The middle value of a data is known as median.

So,

Median = 18

Mode:

• The most frequently occurring value is called mode.

Here,

Mode = 18 (occurring 2 times)

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