The following observations represent the weekly pocket money (in rupees) received by seven students of a coaching class:
17, 12, 19, 25, 15, 17, 12.
a. (i) Define the term “range” as used in statistics.
b. (ii) State the symbolic formula used to compute the range for ungrouped data.
c. (iii) Identify the maximum and minimum pocket-money values from the data given.
d. (iv) Using your results from part (iii), find the range of the pocket-money distribution.