| Exam Board | OCR MEI |
|---|---|
| Module | S1 (Statistics 1) |
| Marks | 8 |
| Paper | Download PDF ↗ |
| Topic | Data representation |
| Type | Draw cumulative frequency graph from frequency table (equal class widths) |
| Difficulty | Easy -1.8 This is a routine data representation exercise requiring only mechanical plotting of cumulative frequencies and reading values from the graph. It involves standard GCSE-level skills (drawing cumulative frequency curves, finding median/quartiles) with no problem-solving or statistical insight required beyond stating skewness type. |
| Spec | 2.02f Measures of average and spread |
2 Every day, George attempts the quiz in a national newspaper. The quiz always consists of 7 questions. In the first 25 days of January, the numbers of questions George answers correctly each day are summarised in the table below.
(i) On the insert, draw a cumulative frequency diagram to illustrate the data.\\
(ii) Use your graph to estimate the median length of journey and the quartiles.
Hence find the interquartile range.\\
(iii) State the type of skewness of the distribution of the data.
\hfill \mbox{\textit{OCR MEI S1 Q2 [8]}}