JAMB - Mathematics (1989 - No. 39)
If n is the median and m is the mode of the following set of numbers, 2.4, 2.1, 1.6, 2.6, 2.6, 3.7, 2.1, 2.6, then (n, m) is
(2.6, 2.6)
(2.5, 2.6)
(2.6, 2.5)
(2.5, 2.1)
Vysvětlení
Arrange the numbers in order, 1.6, 2.1, 2.1| 2.4, 2.6| 2.6, 2.6, 3.7
n = median = \(\frac{2.4 + 2.6}{2}\)
= 2.5
m = mode = 2.6
∴ (n, m) = (2.5, 2.6)
n = median = \(\frac{2.4 + 2.6}{2}\)
= 2.5
m = mode = 2.6
∴ (n, m) = (2.5, 2.6)