The number of social interactions of ten minutes or longer over a​ one-week period for a group of college students is given in the following frequency table.​ (These interactions excluded family and...

The number of social interactions of ten minutes or longer over a​ one-week period for a group of college students is given in the following frequency table.​ (These interactions excluded family and work​ situations.) Find the​ mean, median,​ mode, and midrange for these data.