FUNDAMENTALS OF BUSINESS MATHEMATICS AND STATISTICS I 5.29- The heights (in cm) of few students are as follows :
69, 75, 72, 71, 73 , 74, 76, 75, 70
Find second quartile. [Ans. Q 2 = 72.5 cm] - Find the median of the following numbers :
6, 4, 3, 6, 5, 3, 3, 2, 4, 3, 4, 3, 3, 4, 3, 4, 2, 2, 4, 3, 5, 4, 3, 4, 3, 3, 4, 1, 1, 2, 3.[Ans. 3] - Find the median of the following distribution :
x y
1 22
2 31
3 40
4 42
5 24
6 12
[Ans.3] - Find the median class and median from the table given :
(i) C.I Frequency
0–10 5
10–20 4
20–30 6
30–40 3
40–50 2
[Ans. (20–30); 21.67]
(ii) Score Frequency
5–10 4
10–15 7
15–20 10
20–25 12
25–30 8
30–35 3
Total 44
[Ans.(20 –25); 24.17 score] - Find the following distribution find median class and median :
Score Frequency
30–39 1
40–49 4
50–59 14
60–69 20
70–79 22
80–89 12
90–99 2
[Ans. (59.5–69.5); 68.75 score]