The marks in Science of 13 students are 31, 37, 29, 41, 35, 35, 38, 36, 35, 38, 32, 29, 43. Find the range, mean , mode and median
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Step-by-step explanation:
Rearranging the data into ascending order, we get
17,18,23,25,29,31,35,35,35,37,38,42
Here,
(a) Range = greatest observation − lowest observation
=42−17=25
(b) Mean = Sum of observations ÷ number of observations
= (17+18+23+25+29+31+35+35+35+37+38+42) / 12
= 365 / 12
= 30.41
(c) Since the total number of observations is even
Median
= (31+35) / 2
= 66 / 2
=33
(d) The mode is 35 because it occurs most frequently i.e., 3 times.
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