Key in the summary numbers

Exercise and reference answers

Questions

1. Answer

   18

   Question

   First quartile 12, third quartile 30. Interquartile range?

2. Answer

   48

   Question

   Smallest value 20, largest value 68. Range?

3. Answer

   7

   Question

   Mean 5, standard deviation 2. Value one deviation above the mean?

4. Answer

   49

   Question

   An ordered list of 97 values. Position of the median?

5. Answer

   0.075

   Question

   3 students out of 40. Relative frequency?

Instructions

Read each short data question and key the number it asks for into the pad.

Explanation