The standard deviation of a distribution divided by the mean of the distribution and expressing in percentage is called:

Given the heights (in cm) of two groups of students:

Group $A:131\mathrm{cm},150\mathrm{cm},147\mathrm{cm},138\mathrm{cm}$
$144\mathrm{cm}$
Group $\mathrm{B}:139\mathrm{cm},148\mathrm{cm},132\mathrm{cm},151\mathrm{cm}$
$140\mathrm{cm}$
Which of the following is / are true?
I) The ranges of the heights of the two groups of students are the same.
II The means of the heights of the two groups of students are the same.

Find the range for the following data.

$76, 57, 80, 103, 61, 63, 89, 96, 105, 72$

Find the range and mean of the following data.

$116, 124, 164, 150, 149, 114, 195, 128, 138, 203, 144$