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India
Class IX

Comparisons and Predictions

Lesson
Practice

Interactive practice questions

A survey was conducted asking students from years $5$5, $6$6, $7$7 and $8$8 what eye colour they have.

The results are shown below using divided bar graphs.

Four divided bar graphs are labeled as "Year 5," "Year 6," "Year 7," and "Year 8." Each bar graph are divided into portions labeled and colored as "Brown," "Blue," "Green," and "Black," from left to right. At Year 5, the brown portion appear to have the shortest length, followed by the blue and green portions which appears to have the same length, followed by black which appears to be the longest portion. At Year 6, the green portion appear to have the shortest length, followed by the blue portion, then the brown portion, and then the black portion which appears to be the longest. At Year 7, the brown portion appear to have the shortest length, followed by the blue portion, then the black portion, and then the green portion which appears to be the longest. At Year 8, the brown portion appear to have the shortest length, followed by the black portion, and then the blue portion which appears to be the longest. There's no green portion at Year 8.
a

Which grade has the largest percentage of brown-eyed children?

Year 6

A

Year 7

B

Year 5

C

Year 8

D
b

Which grade has the largest percentage of blue-eyed children?

Year 5

A

Year 7

B

Year 8

C

Year 6

D
c

Which grade has the smallest percentage of black-eyed children?

Year 7

A

Year 5

B

Year 6

C

Year 8

D
d

Which grade has no green-eyed children?

Year 8

A

Year 5

B

Year 7

C

Year 6

D
e

Which grade has the same percentage of green-eyed children as blue-eyed children?

Year 5

A

Year 6

B

Year 8

C

Year 7

D
Easy
1min

Study the bar graph below which shows the changes in tourism rates in different cities during 2011 and 2012, then answer the following questions.

Easy
2min

A tree is measured every year and its height recorded.

Easy
< 1min

Consider the following graph:

(Data from http://www.livingin-australia.com/sunshine-hours-australia/)

Easy
1min
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Outcomes

9.SP.S.1

Introduction to Statistics: Collection of data, presentation of data – tabular form, ungrouped/ grouped, bar graphs, histograms (with varying base lengths), frequency polygons, qualitative analysis of data to choose the correct form of presentation for the collected data.

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