Question 7
Measures of Central TendencyIf the mean of the numbers a, b, c, d, e is x, find the mean of numbers a + k, b + 2k, c − k, d − 2k, e
- A.x
- B.x + k
- C.x − k
- D.2x
Show the answer and explanation
Answer: A (x)
Explanation
The k terms add to k + 2k − k − 2k = 0, so the total is still 5x and the mean is still x.