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-991CW for statistics

Maths

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

Calculator functionality

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 time it takes for a sample of pupils to travel to school is collected in this grouped frequency table. What is the estimated mean travel time (to the nearest minute)?

The time it takes for a sample of pupils to travel to school is collected in this grouped frequency table. In what time interval is the median?

The time it takes for a sample of pupils to travel to school is collected in this grouped frequency table. Calculate the estimated 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.

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