#### Chapter 23 Graphical Representation of Statistical Data R.D. Sharma Solutions for Class 9th MCQ's

Multiple Choice Questions

1. Which one of the following is not the graphical representation of statistical data:
(a) Bar graph
(b) Histogram
(c) Frequency polygon
(d) Cumulative frequency distribution

Solution

(d) Cumulative frequency distribution
We know that bar graph, histogram and frequency polygons are all graphical representation of statistical data.
Hence, the correct answer is option (d).

2. In a frequency distribution, ogives are graphical representation of
(a) Frequency
(b) Relative frequency
(c) Cumulative frequency
(d) Raw data

Solution

(c) Cumulative frequency
In a frequency distribution, ogives are graphical representation of cumulative frequency.
Hence, the correct answer is option (c).

3. A frequency polygon is constructed by plotting frequency of the class interval and the
(a) Upper limit of the class
(b) Lower limit of the class
(c) Mid value of the class
(d) Any values of the class

Solution

(c) mid value of the class
Frequency polygon is the plot of frequencies vs. the mid values of the classes.
Hence, the correct answer is option (c)

4. In a histogram the area of each rectangle is proportional to
(a)  the class mark of the corresponding class interval
(b) the class size of the corresponding class interval
(c) frequency of the corresponding class interval
(d) cumulative frequency of the corresponding class interval

Solution

(c) frequency of the corresponding class interval
In a histogram the area of each rectangle is proportional to the frequency of the corresponding class interval.
Hence, the correct answer is option (c).

5.  In the 'less than' type of ogive the cumulative frequency is plotted against

(a) the lower limit of the concerned class interval

(b) the upper limit of the concerned class interval
(c) the mid-value of the concerned class interval
(d) any value of the concerned class interval

Solution

(b) the upper limit of the concerned class interval
In the less than type of ogive the cumulative frequency is plotted against the upper limit of the concerned class interval.
Hence, the correct answer is option (b).

6. In a histogram the class intervals or the group are taken along
(a) Y-axis
(b) X-axis
(c) both of X-axis and Y-axis
(d) in between X and Y axis

Solution

(b) X-axis
In a histogram the class intervals or the groups are taken along the horizontal axis or X-axis.
Hence, the correct answer is option (b).

7. A histogram is a pictorial representation of the grouped data in which class intervals and frequency are respectively taken along
(a) vertical axis and horizontal axis
(b) vertical axis only
(c) horizontal axis only
(d) Horizontal axis and vertical axis

Solution

(d) Horizontal axis and vertical axis
In a histogram the class intervals and frequencies are taken along horizontal and vertical axes respectively.
Hence, the correct option is (d).

8. In a histogram, each class rectangle is constructed with base as
(a) Frequency
(b) Class-intervals
(c) Range
(d) Size of the class

Solution

(b) Class-intervals
In a histogram, the class rectangles are constructed with base as the class-intervals.
Hence, the correct answer is option (b).