Question

the mean of the following scores 5,7,3,8and 7 is​

Answer 1

Answer:

a) Mean=  

Total no. of observations

sum of the number

​  

 

⇒ Mean=  

40

2+3+4+3+5+5+6+7+8+9+6+6+5+3+13+7+8+8+2+9+11+7+8+4+5+45+48+60+42+53+47+51+54+49+48+47+53+48+44+46

​  

 

⇒ Mean=  

40

119+770

​  

,  

40

889

​  

=22.2

∴ Mean=22.2

b)  To arrange data in ascending order  

Median : 2,2,3,3,3,4,4,5,5,5,5,6,6,6,7,7,7,8,8,8,8,9,9,11,13,42,44,45,46,47,48,48,49,51,53,53,54,60.

Median =  

2

8+8

​  

=  

12

6

​  

=8

c)  

Mode :- The only number which appears multiple times  

Mode =2,3,4,5,6,7,8,9,48,53

d)  Range: The subtract the smallest number from the largest number  

=60−2=58

∴  Range =58