find the mean and median of the following data: 27, 21, 12, 17, 25, 11, 19, 20
Answers
Answer:
mean is the average number between them
mean = sum of all number ÷ total number of digits
therefore
= 27+21+12+17+25+11+19+20÷ 8
mean = 152÷8
= 19
meadian is the middle number between them
but middle number is (I dont know) sorry but mean is right surely
Answer:
Step-by-step explanation:
Given data is arranging in an ascending order,
We have 11, 12, 17, 19, 20, 21, 25, 27.
∴ Mean = Sum of the observations / Number of observations
= ( 11 + 12 + 17 + 19 + 20 + 21 + 25 + 27 ) / 8
= 152 / 8
= 19 is the answer.
Given data has an even number, that is 8.So, the Median of the data is the ( n/2 )th observation and ( n/2 + 1 ) th observation.
∴ Median = 19+ 20 / 2
= 39/2
= 19. 5 is the answer.