Key learning points

1. Some calculators can perform more than just basic calculations.
2. The fx-CG50 can produce a statistical summary of a set of data.
3. The summary includes the mean, median, upper and lower quartiles.
4. The fx-CG50 can produce graphical representations of data.

Keywords

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

• Mean - 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.

• Median - 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.

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

• Statistical summary - 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.

Common misconception