STATISTICS - Jamb Mathematics Past Questions and Answers

Question 76:

• JAMB 1978

If y = 2x² + 9x - 35. Find the range of values for which y < 0.

A. 7 < x < \(\frac{5}{2}\)
B. -5 < 7 < x
C. -7 < x < 5
D. -7 < x < \(\frac{5}{2}\)

Question 77:

• JAMB 1978

In a soccer competition in one season, a club had scored the following goals: 2, 0, 3, 3, 2, 1, 4, 0, 0, 5, 1, 0, 2, 2, 1, 3, 1, 4, 1 and 1. The mean, median and mode are respectively

A. 1, 1.8 and 1.5
B. 1.8, 1.5 and 1
C. 1.8, 1 and 1.5
D. 1.51, 1 and 1.8
E. 1.5, 1.8 and 1

Question 78:

• JAMB 1979

The mean of the numbers 1.2, 1.0, 0.9, 1.4, 0.8, 0.8, 1.2 and 1.1 is

A. 1.5
B. 0.8
C. 1.0
D. 1.02
E. 1.05

Question 79:

• JAMB 1979

The mean of the numbers 1.2, 1.0, 0.9, 1.4, 0.8, 0.8, 1.2 and 1.1 is

A. 1.5
B. 0.8
C. 1.0
D. 1.02
E. 1.05

Question 80:

• JAMB 1979

For the set of numbers 2, 3, 5, 6, 7, 7, 8

A. The median is greater than the mode
B. The mean is greater than the mode
C. The mean is greater than the median
D. The median is equal to the mean
E. The mean is less than the median