Question

you ask 55 of your classmates if they have any siblings. complete the two way frequently table to shows the results of the survey.construct the two way frequently table.

Answer 1

The total number of students is 55.

That means the total at the bottom of the "Total" column is 55. This means if you have a total of 25 boys, the "Boys" column should have, 15 and 10 (which totals 25).

The row for girls has 25 in row 2, this means Row 2 for boys and girls should have 25 and 10, and that means the second row under "Total" is 35.

Also, row 1 for "Girls" should be 5, since the total in row 1 is 20 and boys in row 1 is 15. Therefore, total for "Girls" should be 5 and 25, which is 30.

Therefore, the missing numbers are;

GIRLS

5

25

30

BOYS

15

10

25

TOTAL

20

35

55