The following table shows the number of employees working in four organisations during six years. Answer the questions that follow.
| Organization | Year | |||||
| 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | |
| X | 52 | 82 | 62 | 34 | 68 | 76 |
| Y | 105 | 80 | 120 | 160 | 95 | 100 |
| Z | 103 | 86 | 88 | 212 | 180 | 129 |
| T | 153 | 221 | 128 | 126 | 97 |
106 |
What is the average number of employees in organisations Y, Z and T in 2013?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 166.
Total number of employees in 2013 = 160 + 212 + 126 = 498
We know that,
Average = Sum of observations/Number of observations
So,
Average = 498/3 = 166