Question

The marks secured in Mathematics test ( out of 40) by 10 students are as follows:
18, 24, 27, 35, 32, 17, 38, 24, 30, 24. Find Mean, Median and Mode.

Answer 1

Answer:

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

=  

12

17+18+23+25+29+31+35+35+35+37+38+42

​

 

=  

12

365

​

=30.41

(c) Since the total number of observations is even  

Median =  

2

31+35

​

=  

2

66

​

 

=33

(d)   The mode is 35 because it occurs most frequently i.e., 3 times.

Step-by-step explanation: