Question

The following are the number of birth per year per 1,000 population for 20 countries: 34, 24, 10, 15, 22, 15, 17, 22, 10, 17, 25, 32, 15, 20, 31, 18, 37, 12, 15, 18.The mean birth per year per 1,000 population is:A.22.3B.19.5C.22.45D.None of the aboveThe median birth per year per 1,000 population isA.15B.18C.22D.None of the aboveThe mode birth per year per 1,000 population isA.15B.18C.22D.None of the aboveThe range birth per year per 1,000 population isA.15B.18C.28D.None of the above

Answer 1

Answer:

A. D = None of the above

B. B = 18

C. A = 15

D. D = None of the above

Step-by-step explanation:

Rearranging the population from the highest to the lowest.

10, 10, 12, 15, 15, 15, 15, 17, 17, 18, 18, 20, 22, 22, 24, 25, 31, 32, 34, 37

Mean = (summation of all the 20 samples)/ no of samples

Mean per year per 1000 population = 409/20

= 20.45

Median = the middle value (for odd numbered samples)

= the sum of the middle value ÷ 2 ( for even numbered samples)

Median birth per year per 1000 population = (18 + 18)/2

= 18

Mode = the sample that has the number of frequency

Mode per year per 1000 population = 15 (frequency = 4)

Range = highest value sample - lowest value sample

Range per year per 1000 population = 37 - 10

= 27