Question

●●●The marks obtained by 20 students in a class test(out of 20) as follows:

10, 12, 9, 19, 15, 19, 20, 20, 18, 18, 18, 15, 17, 17, 14, 17, 18, 19, 19, 18

i. Find the highest score obtained.

ii. Find the lowest score obtained.

iii. Find the range of the given data●●●​

Answer 1

Answer:

highest score = 20

lowest score = 9

range= highest score - lowest score

=20-9

=11