Question

find the mean and median of the data 18 21 15 23 5 7 12 18 25 18 21 15 23 18 25 5 7 23​

Answer 1

Answer:

Step-by-step explanation:

The range of the data=Highest vale-lowest value

Highest value= 36

Lowest value=6

∴Range of the data=32−6=24

Mean of a list of numbers = sum of the numbers/Total number

so, mean = (17+15+23+7+9+13)/6 =84/6 =14;

To find the median, first we have to write the numbers in ascending order.

In ascending order the numbers are: 7,9,13,15,17,23

if the number of total data (suppose n) is odd then median = {(n+1)/2}th term.

& if the number of total data is even then median = [(n/2)th term + (n/2 + 1)th term]/2

Here n=6 (even) so, median = [(6/2)th term (6/2 + 1)th term]/2

median= [3rd term + 4th term]/2 =(13+15)/2 =14;

The mode is the number that is repeated most often, but all the numbers in this list appear only once, so there is no mode.

So, Mean of the given data= 14;

Median= 14;