The marks in a subject for 12 students are as follows 31, 37, 35, 38, 42, 23, 17, 18, 35, 25, 35, 29 Find the mean, median and mode.
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Step-by-step explanation:
(b) Mean = Sum of observations ÷ number of observations
=
17+18+23+25+29+31+35+35+35+37+38+42
-----------------------------------------------
12
= 365
---------- =30.41
12
(c) Since the total number of observations is even
Midian = 31+35 66
-------- = ----- = 33
2 2
(d) The mode is 35 because it occurs most frequently i.e., 3 times.
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