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

Statistical Questions

Interactive practice questions

Which two of the following are statistical questions?

How tall are the $history$ teachers in your school?

A

Which city is the capital of $France$ ?

B

What is your favorite $movie$ ?

C

How far away is the $moon$ from the Earth, right now?

D

What is the average monthly rainfall in the state capital cities of Australia?

E

How old is your $mom$ ?

F

Easy

< 1min

Which three of the following are statistical questions?

Easy

< 1min

A maths class wants to work out if the girls in the class are taller than the boys.

Easy

< 1min

Is the following a statistical question?

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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