The frequency is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.

The (arithmetic) mean for a set of numerical data is the sum of the values divided by the number of values. It is a measure of central tendency representing the average of the values.

The median is the central (middle) piece of data when the data are in numerical order. It is a measure of central tendency representing the average of the values.

The mode is the most frequent value. It is a measure of central tendency representing the average of the values.

A statistical summary sums up the features of a data set. It may contain the mean, median and/or mode which measure the central tendency. It may also contain the range which measures the spread.

Using the fx-83/85GT CW for statistics

Maths

This unit teaches how to use scientific calculators and expores their functionality

Calculator functionality

This frequency table shows the number of goals scored in each match by all the teams in a club over one football season. What was the mean number of goals scored (to the nearest goal)?

This frequency table shows the number of goals scored in each match by all the teams in a club over one football season. What was the median number of goals scored?

This frequency table shows the number of goals scored in each match by all the teams in a club over one football season. Calculate the interquartile range.

This frequency table shows the star rating received by a restaurant over its opening weekend. What was the mean star rating (to the nearest star)?

This frequency table shows the star rating received by a restaurant over its opening weekend. What was the median star rating?

This frequency table shows the star rating received by a restaurant over its opening weekend. Calculate the interquartile range.

The {{}} is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.

The arithmetic {{}} for a set of numerical data is the sum of the values divided by the number of values. It is a measure of central tendency representing the average of the values.

The {{}} is the central (middle) piece of data when the data are in numerical order. It is a measure of central tendency representing the average of the values.

The {{}} is the most frequent value. It is a measure of central tendency representing the average of the values.

A {{}} summary sums up the features of a data set. It may contain the mean, median and/or mode which measure the central tendency. It may also contain the range which measures the spread.

Calculate the mean of this data: 3, 3, 3, 4, 4, 5, 5, 7, 7, 7, 7, 7, 7, 8, 9, 12, 15. Give your answer to 2 d.p.

Introduction

What will you need for this lesson?

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Equipment

Worksheet