A newsmagazine asks 1200 students what college they attend, and how many times per week they attend a party where alcohol is served ...

A newsmagazine asks 1200 students what college they attend, and how many times per week they attend a party where alcohol is served. The news magazine determines the mean number of parties per week for each school, and publishes a ranking of the nation’s top ten party schools. I. What is the population? II. What is the sample? III. Is the study observational or experimental? Justify your answer. IV. What are the variables? V. For each of those variables, what level of measurement (nominal, ordinal, interval, or ratio) was used to obtain data from these variables? 

Construct both an ungrouped and a grouped frequency distribution for the data given below: 193 196 188 195 190 187 197 185 194 192 191 193 185 184 188 198 186 195 192 193

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequency 51-53 7 54-56 19 57-59 9 60-62 13 63-65 15