1. A consumer testing laboratory measured the calories per hot dog in 20 brands of beef hot dogs. Here are the results:

186 181 176 149 184 190 158 139 175 148
152 111 141 153 190 157 131 149 135 132

a) Find the five-number summary of this distribution. Be able to explain your procedure.
b) Compute the range and interquartile range. Explain what these numbers tell you about the variability in calories in different brands of all-beef hot dogs.
c) Would a beef hot dog with 175 calories be in the top quarter of the data? Support your answer.