Explain this complex fraction: 330                                                                                               3/4 interpret the results

What situation is an example of an observational study

This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.

Ineed with math stuff it involves graphs