Tales by Dots and Lines: Practice 2

Section A: Core Practice

Question 1mcq

The data values are

4,4,6,6,10

with mean

6

. Which action shows the idea of mean as balance?

A.Use the largest value only.

B.Move

2

from

10

to one of the

4

s to balance around

6

.

C.Change every value to

10

.

D.Delete all values below the mean.

Question 2mcq

A dot plot has values

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

. Which conclusion is most reasonable?

A.The data has no spread.

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

C.All values are equal.

D.The smallest value is

10

.

Question 3mcq

A dot plot has values

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

. Which conclusion is most reasonable?

A.All values are equal.

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

C.The smallest value is

10

.

D.The data has no spread.

Question 4mcq

Which situation is best represented by a line graph?

A.Shapes found in a classroom

B.Types of books in a library

C.Favourite colours of students

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

Question 5mcq

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 6mcq

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

A.Use the graph scale before reading values.

B.The title becomes unnecessary.

C.The data automatically becomes invalid.

D.The graph cannot show numbers.

Section B: Reasoning and Application

Question 7mcq

Find the mean of the data set

[10, 12, 12, 16, 20]

.

A.

70

B.

14

C.

10

D.

20

Question 8mcq

Find the mean of the data set

[1, 3, 7, 7, 7]

.

A.

1

B.

25

C.

7

D.

5

Question 9mcq

The data values are

4,4,6,6,10

with mean

6

. Which action shows the idea of mean as balance?

A.Use the largest value only.

B.Delete all values below the mean.

C.Move

2

from

10

to one of the

4

s to balance around

6

.

D.Change every value to

10

.

Question 10mcq

A dot plot has values

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

. Which conclusion is most reasonable?

A.All values are equal.

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

C.The data has no spread.

D.The smallest value is

10

.

Question 11mcq

A dot plot has values

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

. Which conclusion is most reasonable?

A.The smallest value is

10

.

B.The data has no spread.

C.All values are equal.

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

Question 12mcq

Which situation is best represented by a line graph?

A.Favourite colours of students

B.Types of books in a library

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

D.Shapes found in a classroom