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India
Class IX

Create and interpret frequency tables

Interactive practice questions

$20$20 people were asked how many hours of sleep they had gotten the previous night. The numbers below are each person’s response:

$1,6,9,8,7,9,7,10,2,3,8,7,7,3,7,3,3,7,10,9$1,6,9,8,7,9,7,10,2,3,8,7,7,3,7,3,3,7,10,9

a

How many people got $7$7 hours sleep?

$\editable{}$

b

What is the maximum amount of sleep reported by the group?

$\editable{}$

Easy
< 1min

In a survey some people were asked approximately how many minutes they take to decide between brands of a particular product.

Easy
1min

What kind of data is a frequency table more suited to represent?

Easy
< 1min

The following table shows the number of trains arriving either on time or late at a particular station.

Medium
3min
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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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