1. A student collects information about the number of school going children in a locality consisting of a hundred households. The data collected by him is
a. Primary data
b. Arrayed data
c. Grouped data
d. Secondary data
2. To analyse the election results, the data is collected from a newspapers. The data thus collected is known as
a. Secondary data
b. Primary data
c. Grouped data
d. Raw data
3. Which of the following variables are discrete?
1. Size of shoes
2. Number of pages in a book
3. Distance travelled by a train
4. Time
a. 1 and 3
b. 1 and 4
c. 2 and 4
d. 1 and 2
4. For a given data, the difference between the maximum and minimum observation is known as its
a. Class
b. Class limit
c. Range
d. Class mark
5. In an examination, ten students scored the following marks: 60, 58, 90, 51, 47, 81, 70, 95, 87, and 99. The range of this data is
a. 81
b. 52
c. 60
d. 51
6. A data is such that its maximum value is 75 and range is 20, then find the minimum value?
a. 20
b. 75
c. 95
d. 55
7. The minimum value of a data is 82 and range is 38, then find the maximum value?
a. 60
b. 76
c. 82
d. 120
8. In a bar graph, the widths of bars
a. Are proportional to the corresponding frequencies
b. Have no significance
c. Are proportional to the space between two consecutive bars
d. are proportional to the corresponding heights
9. In a histogram, which of the following is proportional to the frequency of the corresponding class?
a. Area of the rectangle
b. Length of the rectangle
c. Width of the rectangle
d. Perimeter of the rectangle
10. For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequency of respective classes and abscissa are respectively
a. Upper limits of preceding classes
b. Upper limits of the classes
c. Class marks of the classes
d. Lower limits of the classes
Chapter  14 Statistics Quiz1  Math Class 9th
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Question 1 of 10
1. Question
A student collects information about the number of school going children in a locality consisting of a hundred households. The data collected by him is
Correct
Data obtained through the information collected by the investigator herself or himself with definite objective in his/her mind is called as primary data.
Incorrect
Data obtained through the information collected by the investigator herself or himself with definite objective in his/her mind is called as primary data.

Question 2 of 10
2. Question
To analyse the election results, the data is collected from a newspapers. The data thus collected is known as
Correct
Secondary data is the readily available data collected by someone else & published in newspapers or journals etc.
Incorrect
Secondary data is the readily available data collected by someone else & published in newspapers or journals etc.

Question 3 of 10
3. Question
Which of the following variables are discrete?
 Size of shoes
 Number of pages in a book
 Distance traveled by a train
 Time
Correct
Discrete variables are variables that can only take finite values.
Size of shoes & pages in the book have finite number.
Incorrect
Discrete variables are variables that can only take finite values.
Size of shoes & pages in the book have finite number.

Question 4 of 10
4. Question
For a given data, the difference between the maximum and minimum observation is known as its
Correct
Difference between maximum & minimum value of observation is called as range.
Incorrect
Difference between maximum & minimum value of observation is called as range.

Question 5 of 10
5. Question
In an examination, ten students scored the following marks: 60, 58, 90, 51, 47, 81, 70, 95, 87, and 99. The range of this data is
Correct
Difference between the maximum & minimum value of the observation is called as range.
So, 9947 = 52
Incorrect
Difference between the maximum & minimum value of the observation is called as range.
So, 9947 = 52

Question 6 of 10
6. Question
A data is such that its maximum value is 75 and range is 20, then find the minimum value?
Correct
Difference between the maximum & minimum value ot the observations is called as range.
Let, minimum value be ‘x’
75 – X = 20
So, x = 55
Incorrect
Difference between the maximum & minimum value ot the observations is called as range.
Let, minimum value be ‘x’
75 – X = 20
So, x = 55

Question 7 of 10
7. Question
The minimum value of a data is 82 and range is 38, then find the maximum value?
Correct
Difference between the maximum & minimum value of the observation is called as range.
Let maximum value be x
So,
x−82 = 38
x = 82+38
x = 120
Incorrect
Difference between the maximum & minimum value of the observation is called as range.
Let maximum value be x
So,
x−82 = 38
x = 82+38
x = 120

Question 8 of 10
8. Question
In a bar graph, the widths of bars
Correct
Bar graph is a pictorial representation of data variables (xaxis versus it value on yaxis (height of the bar.
Hence width of bar has no significance in bar graph.
Incorrect
Bar graph is a pictorial representation of data variables (xaxis versus it value on yaxis (height of the bar.
Hence width of bar has no significance in bar graph.

Question 9 of 10
9. Question
In a histogram, which of the following is proportional to the frequency of the corresponding class?
Correct
In, Histogram each rectangle is drawn, where width equivalent to class interval and height equivalent to frequency of the class.
Since class interval are same across the distribution table, area of the rectangle is corresponding to frequency or height of the rectangle.
Incorrect
In, Histogram each rectangle is drawn, where width equivalent to class interval and height equivalent to frequency of the class.
Since class interval are same across the distribution table, area of the rectangle is corresponding to frequency or height of the rectangle.

Question 10 of 10
10. Question
For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequency of respective classes and abscissa are respectively
Correct
Frequency polygon is the line graph plotted with class marks on xaxis & frequency of the class on yaxis.
Incorrect
Frequency polygon is the line graph plotted with class marks on xaxis & frequency of the class on yaxis.