Explanation with answer would be greatly appreciated

Given below is a data set: 53 76 78 67 66 63 53 52 77 57 59 66 72 66 65 52 65 84 82 66 67 61 50 75 51 86 66 66 60 69 Examine the data above by reviewing the stem-and-leaf plot. Here is the start of the plot. What are the missing value(s)? 5# | 01223379 6# | 01355666666779 7# | 25678 8# | MISSING The MISSING value(s)