Tales by Dots and Lines: Practice 4

Section A: Core Practice

Question 1mcq

A line graph rises from

10

to

30

to

45

, then changes to

46

and

47

. What trend does it show?

A.No change at all

B.Random values with no pattern

C.A constant decrease

D.The value increases quickly at first and then becomes almost steady.

Question 2mcq

A student reads a bar/line graph without checking the axis scale. What mistake may happen?

A.The data automatically becomes invalid.

B.The title becomes unnecessary.

C.The graph cannot show numbers.

D.Use the graph scale before reading values.

Question 3mcq

Find the mean of the data set

[10, 12, 12, 16, 20]

.

A.

14

B.

20

C.

10

D.

70

Question 4mcq

Find the mean of the data set

[1, 3, 7, 7, 7]

.

A.

25

B.

5

C.

1

D.

7

Question 5mcq

The data values are

4,4,6,6,10

with mean

6

. Which action shows the idea of mean as balance?

A.Change every value to

10

.

B.Delete all values below the mean.

C.Move

2

from

10

to one of the

4

s to balance around

6

.

D.Use the largest value only.

Question 6mcq

A dot plot has values

2,3,3,4,4,4,5,10

. Which conclusion is most reasonable?

A.All values are equal.

B.The smallest value is

10

.

C.The data has no spread.

D.Most values are clustered near the middle, with one high value.

Section B: Reasoning and Application

Question 7mcq

A dot plot has values

2,3,3,4,4,4,5,10

. Which conclusion is most reasonable?

A.Most values are clustered near the middle, with one high value.

B.All values are equal.

C.The smallest value is

10

.

D.The data has no spread.

Question 8mcq

Which situation is best represented by a line graph?

A.A line graph is useful for showing change over time.

B.Shapes found in a classroom

C.Types of books in a library

D.Favourite colours of students

Question 9mcq

A line graph rises from

10

to

30

to

45

, then changes to

46

and

47

. What trend does it show?

A.Random values with no pattern

B.A constant decrease

C.No change at all

D.The value increases quickly at first and then becomes almost steady.

Question 10mcq

A student reads a bar/line graph without checking the axis scale. What mistake may happen?

A.The graph cannot show numbers.

B.Use the graph scale before reading values.

C.The data automatically becomes invalid.

D.The title becomes unnecessary.

Question 11mcq

Find the mean of the data set

[10, 12, 12, 16, 20]

.

A.

70

B.

10

C.

14

D.

20

Question 12mcq

Find the mean of the data set

[1, 3, 7, 7, 7]

.

A.

1

B.

5

C.

25

D.

7