Q Find the mean, the median and the mode of : 12, 24, 24, 12, 30 and 12 - Maths - Data Handling

Question

Q Find the mean, the median and the mode of :

12, 24, 24, 12, 30 and 12
21, 24, 21, 6, 15, 18, 21, 45, 9, 6, 27 and 15

Q The follwoing table shows the market positions of some brands of
soap Draw a suitable bar graph

Soap (Brands)
No of buyers

A
51

B
27

C
15

D
24

E
18

Q The birth rate per thousand of different countries over a
particular period of time is shown below Draw a suitable bar graph:

INDIA
UK
CHINA
GERMANY
SWEDEN

35
22
42
13
8

Q The heights (in cm) of 8 girls of a class are 140, 142, 135, 133,
137, 150, 148 and 138 respectively Find the mean height of these
girls and their median height

Q Find the mode of :

x
15
16
17
18
19
20
21
22
23

f
6
7
9
13
10
12
8
0
4

Height (cm)
37
38
39
40
41

Number of plants
46
89
93
90
153

Avinash Garg · Accepted Answer

Dear Student

26) (1)
we have 12, 24 , 24, 12, 30 and 12
mean =
sum of all valuescounting of values
so mean = 12+24+24+12+30+126 = 1146 =19
for median, firstly rearrange it in ascending order as follows
12,12,12,24,24,30

now there are 6 terms (even numbers); n = 6
so medians are
(n2th and n2+1 ) th terms
so medians are 3rd and 4th terms which are 12 and 24
respectively
exact median = 12+242 = 362 = 18
mode = 12 (maximum repeating value)

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