G9math Q8001

A. 1 only B.2 only C. 3 only D. 1 and 3 only E. 1 , 2 and 3

1. For the sample 9,8,10,9,11,9,12,12 which of the following is (are) false?
   1.the mean is 10 2. the median is 10 3. the mode is 9
   A.1 only B. 2 only C. 3 only D. 1 and 3 only E. 2 and 3 only
2. During a season, the goals scored by a school , football team in 20 matches were as follow;
   Goals scored in a match 0 1 2 3 4 5
   Frequency 2 6 5 3 3 1

The mean number of goals scored was
A.1    B.2    C.2.1    D.2.5    E.3

7.The mean of five numbers is 10 and the mean of two of them is 13. The mean of the
remaining three is
A. 7 B.8 C. 12 D.23 E.24

1. There are seven numbers arranged in row, whose mean is 11. The mean numbers of first four
   numbers is 8 and the last four number is 14. Then the median of the arrangement is
   A.9 B.10 C.11 D.12 E.13
2. Given that the class interval is 34-38. Which of the following is (are) true?
   1. The class limits of the interval are 34 and 38.
   2. The midpoint of the interval is 35.
   3. The lower class boundary is 33.5.