Mathematics
Class X (Science group)
Time: 50 mins
Total marks:25
1). A frequency polygon may be drawn on; SLO # 13.3.2
a). Pie diagram
b). Histogram
c). Bar diagram
d). Frequency Curve
2). Histogram is a graphical representation of a; SLO# 13.3.2
a). Frequency distribution
b). Cumulative frequency distribution
c). Relative frequency distribution
d). Qualitative variable
3). Following are the scores made by a batsman in 10 matches. 23, 15, 35, 48, 41,
5, 8, 9, 11, 51. Find the median of the data; SLO # 13.1.5
a). 9
b). 30
c). 39
d). 19
4). A set contains the following numbers.
3.5, 4, 4.5, 9, 8, 3.1,11,10.5, 8.5, it’s range will be; SLO # 13.6.4
a). 7.9
b). 11
c). 4.5
d). 3.5
5). In a series of 5, 5, 5, 5, 5 the dispersion is; SLO# 13.6.2
a). 5
b). 25
c). 125
d). 0
6). The sum of product of mid-point of class or group and frequencies is
represented by; SLO # 13.3.3
a). x²
b). ∑X
c). fx
d). ∑fx
7). The sum of deviation is; SLO# 13.6.5
a). S²
b). √s²
c). ∑(x- x‾)
d). ∑x²
8). If the standard deviation of a series is 6, then its variance is; SLO # 13.6.4
a). 20
b). 6
c). 36
d). 0
9).The mode of the following numbers is,
102,107,100,109, 77, 88, 103,94; SLO # 13.5.1
a). Zero
b).109
c). 77
d). 107
10). The following table shows the distribution of daily wages ( in rupees ) of
employees working at construction project. SLO # 13.1.1
Daily wages
No. of workers
50 ------- 59
60 ------- 69
70 ------- 79
80 ------- 89
90 ------- 99
5
19
21
39
16
100 ------ 119
29
The number of workers earning Rs, 70/= or more is;
a). 39
b).105
c). 84
d).111
CRQ’S
Q.1(a). Given below are the marks out of 100 obtained by 15 students of class IX in
a monthly test in the subject of mathematics. 60, 62, 65, 66, 67, 68, 66, 60,
73, 67, 69, 70, 63, 64, 63. Formulate the above data in the form of group
data and it may be classified into five classes only .
SLO # 13.1.1, 13.1.2 & 13.2.2 pg #101 PTB Article# 4.1.9
(2 marks)
Q.1(b). If a set of data contains the values as 148, 145, 160, 157, 156, 156,
160.Show that Mode > Median > Mean . SLO # 13.1.5
(3 marks)
Q.2(a). The average charges paid by a group of 8 residents, of a particular
building, for the electricity consumed is Rs, 575. If 7 of the residents paid
the following amount 640,550,350,475,500,850 and 680. What amount was
paid by the 8th resident ? SLO # 13.4.2
(2marks)
Q.2(b).
Complete the following table. SLO # 13.3.3
(3marks)
f
Cumulative frequency
-----23
----19
16
------27
65
84
-------
∑ f = 100
ERQ’s
Attempt One question Q.3 OR Q.4
Q.3
The table given below shows the population of six blocks of a town.
Represent the data by a pie- diagram.
SLO # 13.3.2
(5 marks)
Town
A
B
C
D
E
F
Population
300
210
162
95
60
23
Total
850
Either
Q.4
Ten students took a test in mathematics. They got marks as,
46, 50, 52, 60, 63, 64, 51, 61, 55, 66.
Find the variance in their marks by direct formula only & Standard
deviation. SLO # 13.6.4
(5 marks)