Question

Calculate mean median and mode for the following data.

Height (in.cms)

No. of children

125-130

6

130-1335

13

135-140

19

140-145

26

145-150

15

150-155

7​

Answer 1

Answer:

mean , median and mode are

Step-by-step explanation:

Arranging given marks in ascending order,

4,7,7,9,9,9,10,12,15

Number of observations (n)=9

⇒ Mean=

9

4+7+7+9+9+9+10+12+15

=

9

82

=9.11

⇒ Here, number 9 occurs maximum number of times i.e 3 times.

∴ Mode=9

Number of observation is odd number

∴ Median=(

2

n+1

)

th

obs=(

2

9+1

)

th

obs=5

th

obs

Here, 5

th

obs=9

∴ Median=9

⇒ So, we can see mean measure is maximum and mode,median measures are minimum.

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Answer 2

plz observe the above solutions....to know how it is....

Here,

Mean=135.88

Median=140.96

Mode=141.94

I hope this will help you ....

All the best