Data

Statistical Questions

Statistical Attributes

Choice of Graph for Data (Investigation)

Create and interpret dot plots

Create and interpret frequency tables

Create and Interpret Bar and Pareto Charts

Create and interpret histograms

Statistical Displays - A review

Create and interpret histograms and polygons

Create and interpret cumulative frequency tables

Create and interpret cumulative frequency polygons

Number of Observations

Recognising the centre of data

Mean, median mode and range (calculation from graphs and charts)

Mean, median mode and range (find missing data)

Mean, median mode and range (comparing data sets)

Comparisons and Predictions

Mean, median, mode and range (combined set)

How the shape affects choice of centre and spread

Central Tendency Suitability

Limitations of Measures of Centre and Spread

Class IX

Create and interpret dot plots

Interactive practice questions

Here is a dot plot.

How is the frequency of each score determined if there is no vertical axis representing frequency?

By the height of each set of dots above a particular score

A

By the number of dots above a particular score

B

Easy

< 1min

Choose the dot plot that represents the following data correctly:

Easy

1min

The goals scored by a football team in their matches are represented in the following dot plot.

Easy

< 1min

Use the dot plot to answer the following questions.

Medium

1min

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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About Mathspace