Question
number 2
Stat3411 Test lros Namenclam Score Which of the following measures are not usually affected by outliers? (3pts) 1. The mean the standard deviation a c, The median 2. A set of midterm exam scores has a median that is much larger than the mean. Which of the following statements is most consistent with this information? (3pts) a. A histogram of the data would be symmetric. b. There are scores that are very low compared to the rest of the values. c. A histogram of the data would be skewed right (longer tail on the right). 3. When examining a distribution of a quantitative variable, which of the following features do we look for? (3pts) a. b. c. Overall shape, center, and spread. Symmetry or skewness. Deviations from overall patterns such as outliers. All of the above. 4, A sample of 24 offshore oil workers took part in a simulated escape exercise, resulting in the accompanying data on time (sec) to complete the escape. A. stem-and-leaf display of this data appears below The decimal point is 1 digit(s) to the right of the 1
Explanation / Answer
2. Median is very large as compared to mean indicates that the distribution is skewed to the left i.e. There would be some scores which are very low as compared to the rest of the values.
Hence,
Option B is correct.
