Question

Q.1 Choose the correct alternativo answer for each of the following questions
1) What is the mode of 19,19,15, 20, 25, 15, 20,15?
a) 15
b) 20
c) 19 d)25
(5 Marks
2)What is the Upper-class limit of class 25-35?
a) 25
b) 35
c) 60
d)30
3)If the class are 0-10,10-20, 20-30....... then in which class should the observation 10 be included?
a)0-10 b)10-20
c) 20-30 d) 0-10&10-20 in these 2 classes
4) what is the median of 7, 10, 7, 5, 9, 10?
a)7
b) 9
c) 8
d)10
5) The mean of five numbers is 80 out of which mean of 4 number is 46, find the 5th number.
A)4
b)20
c)434
d)66
(4
Q.2.A Solve the following (2 M each)
1)Complete the following table
Classes (age)
Frequency (no of stud
Tally marks
THL
TAL INL 1111
12-13
13-14​

Answer 1

Answer:

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Explanation:

1) What is the mode of 19,19,15, 20, 25, 15, 20,15?

a) 15

b) 20

c) 19 d)25

2)What is the Upper-class limit of class 25-35?

a) 25

b) 35

c) 60

d)30

3)If the class are 0-10,10-20, 20-30....... then in which class should the observation 10 be included?

a)0-10

b)10-20

c) 20-30

d) 0-10&10-20 in these 2 classes

4) what is the median of 7, 10, 7, 5, 9, 10?

a)7

b) 9

c) 8

d)10

explanation: arranging data in ascending order, we get 5,7,7,9,10,10

on cancelling terms from last to middle we get 7 and 9..

median becomes 7+9/2 = 16/2 = 8

5) The mean of five numbers is 80 out of which mean of 4 number is 46, find the 5th number.

A)4

b)20

c)434

d)66

none of these

explanation:

given mean of 5 numbers = 80

sum of 5 numbers = 80* 5 = 400

also mean of 4 numbers = 46

sum of 4 numbers = 46 *4= 184

5th number = sum of 5 numbers - sum of 4 numbers = 400-185 = 216

ingiven option, it doesn't exist..so correct option is none of these