1.52 Find the IQR. Here are the scores on the first exam in an introductory statistics course for 10 students:
| 83 | 74 | 93 | 85 | 75 | 97 | 93 | 55 | 92 | 81 |
Find the interquartile range and use the 1.5 × IQR rule to check for outliers. How low would the lowest score need to be for it to be an outlier according to this rule?