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question_answer1)
The heights of 5 boys in a group are 152 cm, 170 cm, 156 cm, 164 cm and 158 cm. Find their mean height.
A)
154 cm done
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B)
157 cm done
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C)
160 cm done
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D)
163 cm done
clear
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question_answer2)
The pocket-expenses of Rahul during a week are Rs 15.40, Rs 18.00, Rs 16.50, Rs 14.75, Rs 12.60 and Rs 17.25. Find his mean pocket- expenses per day.
A)
Rs 12.50 done
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B)
Rs 15.75 done
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C)
Rs 13.40 done
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D)
Rs 14.25 done
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question_answer3)
Find the mean of the first six prime numbers.
A)
5.97 done
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B)
8.46 done
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C)
7.12 done
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D)
6.83 done
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question_answer4)
The players of class VII cricket team of a school, made the following runs in a one day match. 15, 20, 3, 0,\[x\], 16, 35,61,20, 5,6. Find\[x\]if the mean score of the team is 25.
A)
76 done
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B)
52 done
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C)
94 done
clear
D)
41 done
clear
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question_answer5)
If the mean of \[x-1,x+10,x-3,x+4\]and\[x\]+ 5 is 9, find the value of x.
A)
5 done
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B)
8 done
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C)
7 done
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D)
6 done
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question_answer6)
The mean of five numbers is 27. If one of the numbers is excluded, the mean becomes 25. Determine the excluded number.
A)
135 done
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B)
25 done
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C)
100 done
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D)
35 done
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question_answer7)
The mean of 10 numbers is 7. If each number is multiplied by 12, find the mean of new set of numbers.
A)
82 done
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B)
48 done
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C)
78 done
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D)
84 done
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question_answer8)
The weight (in kg) of 10 students in a class are 50, 54, 53, 50, 56, 50, 59, 61, 50 and 48. Find the median weight of this group of students.
A)
50.4 kg done
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B)
51.5 kg done
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C)
52.3 kg done
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D)
53.6 kg done
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question_answer9)
Find the median of 16, 23, 31, 8, 20, 12, 26, 35 and 14.
A)
26 done
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B)
23 done
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C)
20 done
clear
D)
31 done
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question_answer10)
Find the median of 1.2, 1.8, 2.3, 2.7, 3.1, 3.7, 4.0 and 4.5.
A)
2.7 done
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B)
3.1 done
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C)
2.3 done
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D)
2.9 done
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question_answer11)
Find the median of\[\frac{3}{4},\frac{1}{2},\frac{2}{3},\frac{1}{6}\]and \[\frac{7}{12}.\]
A)
\[\frac{2}{3}\] done
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B)
\[\frac{1}{6}\] done
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C)
\[\frac{7}{12}\] done
clear
D)
\[\frac{1}{2}\] done
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question_answer12)
Which of the following is the median of \[15\frac{2}{3},15.13,15,15\frac{1}{3}\] and 15.3?
A)
15 done
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B)
15.03 done
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C)
15.3 done
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D)
\[15\frac{1}{3}\] done
clear
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question_answer13)
The observations of an ungrouped data in ascending order are 12, 15, \[x\], 19 and 25. If the median of the data is 18, find the value of\[x\].
A)
17 done
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B)
18 done
clear
C)
16 done
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D)
19 done
clear
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question_answer14)
Find the mode of the numbers 2, 3, 5, 3, 4, 7, 3, 2, 1, 7 and 3.
A)
2 done
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B)
4 done
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C)
3 done
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D)
5 done
clear
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question_answer15)
Find the mode of the scores of a cricket player in seven innings.
A)
4 done
clear
B)
100 done
clear
C)
0 done
clear
D)
Mode does not exist done
clear
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question_answer16)
The weights of eight students are 32 kg, 25 kg, 30 kg, 25 kg 26 kg, 26 kg, 25 kg and 26 kg. Find their modal weight
A)
25kg done
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B)
25 kg or 26 kg done
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C)
26 kg done
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D)
30 kg done
clear
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question_answer17)
Which of the following can be found by observation only?
A)
Arithmetic Mean done
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B)
Median done
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C)
Mode done
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D)
Both (B) and (C) done
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question_answer18)
Marks of 35 students in a mathematics test are given. Find their range. 25 45 65 86 87 62 30 41 20 62 81 86 33 25 86 80 45 62 25 31 36 71 82 74 67 28 29 46 53 55 58 80 70 60 20
A)
71 done
clear
B)
58 done
clear
C)
67 done
clear
D)
53 done
clear
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question_answer19)
The table shows the score obtained by a group of students in a particular competition.
Find the modal score.
A)
4 done
clear
B)
3 done
clear
C)
2 done
clear
D)
1 done
clear
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question_answer20)
Given is a graph showing the number of electric bulbs sold in a shop during a week.
What was the mean sale during the week?
A)
141 done
clear
B)
140 done
clear
C)
150 done
clear
D)
142 done
clear
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question_answer21)
The graph shows the number of students from different cities who passed and that who failed in an entrance exam.
What is the ratio of the number of students passing in the entrance exam from city B to those passing from city E?
A)
6 : 5 done
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B)
5 : 7 done
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C)
5 : 4 done
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D)
1 : 1 done
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question_answer22)
The following bar chart represents the number of workers in four factories P, Q, R and S. Factory S has 300 workers.
Find the total number of workers employed by the four factories.
A)
2000 done
clear
B)
1700 done
clear
C)
1200 done
clear
D)
1000 done
clear
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question_answer23)
Between which two values does the probability of happening of an event lie?
A)
-1 and 1 done
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B)
-1 and 2 done
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C)
0 and 1 done
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D)
1 and 5 done
clear
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question_answer24)
A die is thrown once. Find the probability of getting a number greater than 4.
A)
\[\frac{1}{6}\] done
clear
B)
\[\frac{1}{4}\] done
clear
C)
\[\frac{1}{5}\] done
clear
D)
\[\frac{1}{3}\] done
clear
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question_answer25)
For finding the favourite cricketer in a class which stastical method is better?
A)
Mean done
clear
B)
Median done
clear
C)
Mode done
clear
D)
Range done
clear
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question_answer26)
5 people were asked about the time in a week they spend in doing social work in community. They said 10, 7, 13, 20 and 15 hours, respectively. Find the mean for average time in a week devoted by them for social work.
A)
10 hrs done
clear
B)
11 hrs done
clear
C)
12 hrs done
clear
D)
13 hrs done
clear
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question_answer27)
The records of a sports goods company show that 4 out of every 100 footballs manufactured have same defect. What is the probability that a football will not have a manufacturing defect?
A)
\[\frac{2}{5}\] done
clear
B)
\[\frac{1}{4}\] done
clear
C)
\[\frac{4}{25}\] done
clear
D)
\[\frac{24}{25}\] done
clear
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question_answer28)
Eight athletes completed a 100 metre race in 22, 23, 21, 22, \[x\], 23, 24 and 25 seconds. Find '\[x\]' if the mean of the data is 23 seconds.
A)
25 done
clear
B)
24 done
clear
C)
23 done
clear
D)
26 done
clear
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question_answer29)
The graph shows the number of problems a class VII student practised every day for his test.
Which statement does the graph support?
A)
Twice as many problems were practised on Saturday on Friday. done
clear
B)
5 times as many problems were practised on Wednesday as on Monday. done
clear
C)
Beginning on Tuesday more problems were practised each day than on the previous day. done
clear
D)
On Thursday a greater number of problems were practiced than on Tuesday and Wednesday combined. done
clear
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question_answer30)
Each new backpack at a bookstore comes with one free gift. The bar graph shows the number of different types of free gifts that were placed in 50 different backpacks.
If the distribution ratio of free gifts placed in backpacks remains the same, how many water bottles should be placed in 300 backpacks?
A)
15 done
clear
B)
45 done
clear
C)
60 done
clear
D)
90 done
clear
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question_answer31)
If the mean of five observations \[x,x+2,x+4,x+6,x+8\]is 11, find the mean of first three observation.
A)
6 done
clear
B)
9 done
clear
C)
12 done
clear
D)
15 done
clear
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question_answer32)
The weekly salaries of eight employees of a firm are Rs 700, Rs 500, Rs 750, Rs 600, Rs 625, Rs 500, Rs 600 and Rs 800. Find the median salary.
A)
Rs 612.5 done
clear
B)
Rs 610.75 done
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C)
Rs 715.25 done
clear
D)
Rs 735.50 done
clear
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question_answer33)
Find the percentage of pupils whose favourite colour was red from the given graph.
A)
12.4% done
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B)
13.05% done
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C)
19.2% done
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D)
25.5% done
clear
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question_answer34)
What is the median of the first 30 even numbers?
A)
30 done
clear
B)
31 done
clear
C)
32 done
clear
D)
60 done
clear
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question_answer35)
The mean marks of 6 students in a class is 65 and the mean marks of 10 other students is 45. Find the mean marks of the 16 students altogether.
A)
48.5 done
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B)
50.5 done
clear
C)
52.5 done
clear
D)
60.5 done
clear
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question_answer36)
Find the mode of first 100 natural numbers.
A)
100 done
clear
B)
0 done
clear
C)
1 done
clear
D)
Mode does not exit done
clear
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question_answer37)
The marks obtained by 35 students of Standard VII in a mathematics test are given. 40 54 65 36 75 99 100 90 32 18 74 36 30 65 70 35 48 49 54 57 58 100 93 91 90 94 91 90 20 34 33 18 70 61 63 Find the range.
A)
61 done
clear
B)
82 done
clear
C)
74 done
clear
D)
34 done
clear
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question_answer38)
Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes.
Outcomes | 3 heads | 2 heads | 1 heads | No head |
Frequency | 23 | 72 | 71 | 28 |
If the three coins are simultaneously tossed again, compute the probability of 2 heads coming up.
A)
\[\frac{4}{40}\] done
clear
B)
\[\frac{2}{23}\] done
clear
C)
\[\frac{9}{25}\] done
clear
D)
\[\frac{3}{28}\] done
clear
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question_answer39)
The mean of the data\[{{x}_{1}},{{x}_{2}}........{{x}_{n}}\]is 102.What is the mean of the data \[5{{x}_{1}},5{{x}_{2}},......,5{{x}_{n}}?\]
A)
102 done
clear
B)
204 done
clear
C)
606 done
clear
D)
510 done
clear
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question_answer40)
Find the range of the first 2014 natural numbers.
A)
2010 done
clear
B)
2014 done
clear
C)
2012 done
clear
D)
2013 done
clear
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