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 Quiz-1 | Math Class 9th

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