Question 43
Measures of Central TendencyWhat is the mean of the data t, 2t − 1, t − 2, 2t − 1, 4t and 2t + 2?
- A.2t
- B.2t − 1
- C.(2/3)t + 1
- D.2t − 1/3
Show the answer and explanation
Answer: D (2t − 1/3)
Explanation
The sum is 12t − 2 and there are 6 values, so the mean is (12t − 2)/6 = 2t − 1/3.