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For items 6 to 9, refer to the following set of scores obtained by the students in
a Mathematics test.
45, 50, 23, 34, 67, 81, 45, 11, 99, 86, 78, 17, 45, 34, 87, 56, 45
6. What is the n1 in the distribution?
B. 17
C. 23
D. 34
7. How many scores are higher than the D3?
A. 5
B. 8
C. 11
D. 12
8. How many scores are lower than the D7?
A. 5
B. 6
C. 11
D. 12
9. What is the P36 in the distribution?
A. 34
B. 45
C. 50
D. 56
10. How many scores are lower than the P60?
A. 10
B. 11
C. 12
D. 13​