(a) Present the following data of the percentage marks of 60 students in the lorm of a frequency table with 10 classes of equal width, one class being 50–59 41 17 33 63 54 92 60 58 70 06 67 82 33 44 57 49 34 73 54 63 36 52 32 75 60 33 09 79 28 30 42 93 43 80 03 32 57 67 24 64 63 11 35 82 10 23 00 41 60 32 72 53 92 88 62 55 60 33 40 57

The following data represents the age of 30 lottery winners. 23 28 29 31 33 41 44 49 49 49 49 55 57 57 60 63 63 64 66 66 67 68 69 69 70 71 73 75 76 87 Complete the frequency distribution for the data. Age Frequency 20-29 30-39 40-49 50-59 60-69 70-79 A 80-89

The following are the ages of 30 employees at a local computer company: 29 35 21 28 25 36 44 27 24 24 19 21 33 32 49 25 26 20 32 29 23 37 26 31 29 28 25 25 30 24 0. Find the minimum and maximum of the data. 1. Create a stemplot of the data. 2. Organize the stems of the stemplot. 3. Create a new stemplot by splitting the stems. 4. Make a frequency table of the data, with a first interval of “19-22": 5. Create a histogram of the data from the frequency table. 6. Check your work by replicating the histogram on your calculator.

The following are the grades received on an paper by 25 students.                                          97   97 98    40   45 77    65 65    65   68   81   93   68   71   87   85    88    76   79   78   87   81    81   83   89  a) Fill in the frequency table below using the data given. Use 10-point bins. Note: You may have rows left over.                      Grade Frequency Relative Frequency Cumulative Frequency                                                                         Total:           b) Draw a histogram based on the frequency table in part a . Don’t forget to label properly the axes, and put a title.