9th class Math, Chapter 12: Information Handling MCQs

1. Which data take only some specific values?

1. (A) continuous data
2. (B) discrete data ✓
3. (C) grouped data
4. (D) ungrouped data

2. The number of times a value occurs in a data is called:

1. (A) frequency ✓
2. (B) relative frequency
3. (C) class limit
4. (D) class boundaries

3. Midpoint is also known as:

1. (A) mean
2. (B) median
3. (C) class limit
4. (D) class mark ✓

4. A frequency polygon is also drawn/constructed by using:

1. (A) histogram ✓
2. (B) bar graph
3. (C) class boundaries
4. (D) class limit

5. The difference between the greatest value and the smallest value is called:

1. (A) class limits
2. (B) midpoint
3. (C) relative frequency
4. (D) range ✓

6. A measure of central tendency is used to find the ______ of a data set.

1. (A) class boundaries
2. (B) cumulative frequency
3. (C) middle or centre value ✓
4. (D) frequency

7. If the mean of 5, 7, 8, 9 and x is 7.5, the value of x is:

1. (A) 10
2. (B) 8
3. (C) 8.5 ✓
4. (D) 5.8

8. The mode of 2, 5, 8, 9, 0, 1, 3, 7 and 10 is:

1. (A) 5
2. (B) 7
3. (C) 0
4. (D) no mode ✓

9. In a data the value which appears or occurs most often is called:

1. (A) mean
2. (B) mode ✓
3. (C) median
4. (D) weighted mean

10. The median of 110, 125, 122, 130, 124, 127 and 120 is:

1. (A) 124 ✓
2. (B) 120
3. (C) 125
4. (D) 127

11. Data that can take every possible value in a given interval is called:

1. (A) raw data
2. (B) nominal data
3. (C) continuous data ✓
4. (D) discrete data

12. The number of books sold by a shopkeeper is an example of:

1. (A) continuous data
2. (B) grouped data only
3. (C) qualitative data
4. (D) discrete data ✓

13. Data not arranged in any systematic order is called:

1. (A) ordered data
2. (B) ungrouped data ✓
3. (C) grouped data
4. (D) frequency data

14. The size of the class is found by:

1. (A) range − number of classes
2. (B) range ÷ number of classes ✓
3. (C) range × number of classes
4. (D) range + number of classes

15. The range of the data 12, 25, 7, 40, 31 is:

1. (A) 33 ✓
2. (B) 40
3. (C) 28
4. (D) 25

16. Class boundaries of the class 10–14 (with next class 15–19) are:

1. (A) 9.5–14.5 ✓
2. (B) 10.5–14.5
3. (C) 9–15
4. (D) 10–15

17. The class boundaries are obtained by subtracting ______ from the lower limit and adding ______ to the upper limit when the classes are 5–9, 10–14, ...

1. (A) 1, 1
2. (B) 2, 2
3. (C) 0.1, 0.1
4. (D) 0.5, 0.5 ✓

18. A histogram is a graph of:

1. (A) adjacent rectangles ✓
2. (B) a straight line
3. (C) a pie
4. (D) a curve

19. In a histogram the bars are drawn over the:

1. (A) frequencies
2. (B) class boundaries ✓
3. (C) class limits
4. (D) midpoints

20. When class widths are unequal, the heights of the rectangles are:

1. (A) adjusted frequencies ✓
2. (B) midpoints
3. (C) class boundaries
4. (D) cumulative frequencies