STATISTICS - Jamb Mathematics Past Questions and Answers

Question 271:

• JAMB 2007

Marks	3	4	5	6	7	8
Frequency	5	y - 1	y	9	4	1

The table above gives the frequency distribution of marks obtained by a group of students in a test. If the total mark scored is 200, calculate the value of y

A. 15
B. 13
C. 11
D. 8

Question 272:

• JAMB 2007

In how many ways can 6 subjects be selected from 10 subjects for an examination

A. 218
B. 216
C. 215
D. 210

Question 273:

• JAMB 2008

On a pie chart there are six sectors of which four angles are 30°, 45°, 60°, 90° and the remaining two angles are in the ratio 2:1. Find the smallest angles of the remaining two angles.

A. 15^o
B. 30^o
C. 45^o
D. 60^o

Question 274:

• JAMB 2008

The bar chart above shows the number of times the word a, and , in, it, the , to appear in a paragraph in a book. What is the ratio of the least frequent word?

A. ¹/₄
B. ¹/₃
C. ²/₃
D. ³/₄

Question 275:

• JAMB 2008

What is the mean of the data t, 2t-1, t-2, 2t-1, 4t and 2t+2?

A. 2t
B. 2t-1
C. ²/₃t+1
D. 2t-¹/₃