CBSE Class 8 Mathematics Tales by Dots and Lines MCQs Set H

Question. Line graphs are better than column graphs for showing
(a) One single value
(b) Trends over years
(c) Student names
(d) Single city name

Answer: B

Question. Visual information presented in an appealing and quick way is called
(a) Paragraph
(b) Infographic
(c) Table
(d) List

Answer: B

Question. Sum of distances to values lower than the centre is equal to sum of distances to values higher than it. This centre is
(a) Median
(b) Mode
(c) Mean
(d) Range

Answer: C

Question. Manoj records his daily work using a strip of
(a) 10 boxes
(b) 48 boxes
(c) 100 boxes
(d) 7 boxes

Answer: B

Question. To find the correct average after a mistake, we first find the
(a) Median
(b) Correct total sum
(c) Smallest number
(d) Frequency

Answer: B

Question. Average height of a class is 150.2 cm. If everyone wore 1 cm shoes, the measured average was
(a) 151.2
(b) 149.2
(c) 150.2
(d) 160.2

Answer: A

Question. If every number in a group is multiplied by 5, the mean becomes
(a) 5 times more
(b) 5 plus more
(c) 5 less
(d) Same

Answer: A

Question. Line graphs are very good to show how data changes over
(a) Distance
(b) Weight
(c) Time
(d) Height

Answer: C

Question. In a frequency table, the total number of values is the sum of
(a) First column
(b) Frequencies
(c) Last column
(d) Names

Answer: B

Question. As we grow from teenage to adulthood, sleep time
(a) Increases
(b) Stays same
(c) Decreases
(d) Doubles

Answer: C

Question. A graph with 52 bars is very
(a) Easy to read
(b) Small
(c) Crowded and difficult
(d) Colorful

Answer: C

Question. A value 43 was noted as 40 by mistake. The new total will be
(a) 3 less
(b) 3 more
(c) Same
(d) 40 more

Answer: B

Question. In a line graph, vertical line shows
(a) Name of city
(b) Measured value like temperature
(c) Days of week
(d) Year

Answer: B

Question. After age 50, average sleep time typically
(a) Decreases
(b) Increases
(c) Stops
(d) Stays at 4 hours

Answer: B

Question. To find the mean of the first 50 natural numbers, we find their
(a) Difference
(b) Product
(c) Average
(d) Median

Answer: C

Question. If a line on the graph is very steep, it means the change is
(a) Very slow
(b) Fast or greater
(c) Zero
(d) Decreasing

Answer: B

Question. Formula =SUM(B3:G3) is used to find the
(a) Average
(b) Total
(c) Minimum
(d) Median

Answer: B

Question. In Manoj's strip, one box represents
(a) 1 hour
(b) 30 minutes
(c) 10 minutes
(d) 5 minutes

Answer: B

Question. For any data collection, total number of such balance centres is
(a) Two
(b) Many
(c) Only one
(d) Zero

Answer: C

Question. Including a new value greater than the mean will make the mean
(a) Decrease
(b) Increase
(c) Stay same
(d) Become half

Answer: B