Using the fx-83/85GT CW for statistics

12 questions

1. The ___ is the number of times an event occurs; or the number of individuals (people, animals etc.) with some specific property.
2. 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.
3. 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.
4. The ___ is the most frequent value. It is a measure of central tendency representing the average of the values.
5. 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.
6. 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.
7. 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)?
8. 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?
9. 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.
10. 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)?
11. This frequency table shows the star rating received by a restaurant over its opening weekend. What was the median star rating?
12. This frequency table shows the star rating received by a restaurant over its opening weekend. Calculate the interquartile range.

License: OGL