Key in the statistic

Exercise and reference answers

Questions

1. Answer

   17.5

   Question

   What is the class mark of the interval 10 to 25?

2. Answer

   7

   Question

   What is the mean of 4, 6 and 11?

3. Answer

   9

   Question

   What is the median of 3, 7, 9, 12 and 15?

4. Answer

   3

   Question

   What is the mode of 2, 3, 3, 5, 7?

Instructions

Work out each answer and key it in on the pad.

Explanation