MCQs on Data Handling for 8th Grade
1. What is the mean of the data set: 12, 16, 10, 14, 18?
a) 12
b) 14
c) 15
d) 16
2. The middle value of an ordered data set is called the
a) Mean
b) Median
c) Mode
d) Range
3. Which of the following is most affected by extreme values in the data set?
a) Mean
b) Median
c) Mode
d) Range
4. A pie chart is best used for
a) Showing how data changes over time
b) Comparing categories of data
c) Showing parts of a whole in percentages
d) Representing frequency distribution
5. In a histogram, the bars are drawn
a) With spaces between them
b) Without any space between them
c) In decreasing order of height
d) In random order
6. What does the range of a data set represent?
a) The sum of the data values
b) The difference between the highest and lowest values
c) The average of the data set
d) The most frequently occurring value
7. The mode of a data set is
a) The middle value of the data
b) The value that appears most frequently
c) The sum of all the data values
d) The difference between the highest and lowest values
8. Which graph is most suitable for showing trends over time?
a) Bar graph
b) Line graph
c) Histogram
d) Pie chart
9. If the data set is 20, 25, 30, 35, 40, what is the median?
a) 20
b) 25
c) 30
d) 35
10. Which of the following is a measure of central tendency?
a) Mean
b) Range
c) Frequency
d) Histogram
11. A bar graph is used to
a) Represent continuous data
b) Compare categories of data
c) Show parts of a whole
d) Show cumulative frequency
12. Which of the following graphs is best used to show parts of a whole?
a) Line graph
b) Bar graph
c) Pie chart
d) Histogram
13. If the range of a data set is 20 and the smallest value is 10, what is the
largest value?
a) 10
b) 20
c) 30
d) 40
14. In a frequency table, the sum of all frequencies represents
a) The mode
b) The total number of data points
c) The highest value
d) The range
15. What is the mean of 5, 8, 10, 12, and 15?
a) 8
b) 9
c) 10
d) 12
16. The median of a data set with an odd number of values is
a) The average of all values
b) The middle value when arranged in order
c) The value that appears most frequently
d) The difference between the highest and lowest values
17. What is the mode of the data set: 2, 3, 5, 5, 7, 8, 9?
a) 2
b) 5
c) 7
d) 9
18. Which type of graph is best for showing the frequency of different categories?
a) Bar graph
b) Line graph
c) Pie chart
d) Scatter plot
19. If the mean of five numbers is 12 and the sum of four numbers is 46, what is
the fifth number?
a) 8
b) 10
c) 12
d) 14
20. Which of the following is not a measure of central tendency?
a) Mean
b) Median
c) Mode
d) Range
21. A scatter plot is useful for
a) Showing the relationship between two variables
b) Representing parts of a whole
c) Comparing different categories
d) Showing data over time
22. What is the median of the data set: 4, 8, 15, 16, 23, 42?
a) 15
b) 16
c) 15.5
d) 23
23. A data set contains the numbers 3, 6, 9, 6, and 12. What is the mode?
a) 3
b) 6
c) 9
d) 12
24. Which graph is best for representing data that changes continuously over time?
a) Bar graph
b) Pie chart
c) Histogram
d) Line graph
25. If the mode of a data set is 7, which of the following must be true?
a) 7 is the middle value
b) 7 appears most frequently
c) 7 is the average
d) 7 is the highest value
26. The range of a data set with values 15, 22, 10, 25, and 18 is
a) 7
b) 8
c) 15
d) 10
27. A line graph is commonly used to
a) Compare parts of a whole
b) Show a relationship between two variables
c) Represent continuous data over time
d) Represent categorical data
28. If a data set has a mean of 50 and contains five numbers, what is the sum of
the numbers?
a) 10
b) 100
c) 150
d) 250
29. In a pie chart, a sector that represents 25% of the data would correspond to an
angle of
a) 45°
b) 90°
c) 120°
d) 180°
30. If a data set has two modes, it is called
a) Unimodal
b) Bimodal
c) Multimodal
d) None of the above
