Question:
What is the arithmetic mean of 8 2, 9 2, 10 2, … 152?
What is the arithmetic mean of 8 2, 9 2, 10 2, … 152?
Options:
- a) 133.5
- b) 135.5
- c) 137.5
- d) 139.5 Direction for Questions (61-62): Consider the following for the two (02) items Let y = sin 1 34 27x x
- a) 133.5
- b) 135.5
- c) 137.5
- d) 139.5 Direction for Questions (61-62): Consider the following for the two (02) items Let y = sin 1 34 27x x
correct answer : c)
Explanation:
Sum = S15 – S7
= 15 16 31
6
78 15
6
×× – ××
= 1240 – 140 = 1100
So, mean = 1100
8 137 5= .
Sum = S15 – S7
= 15 16 31
6
78 15
6
×× – ××
= 1240 – 140 = 1100
So, mean = 1100
8 137 5= .