How long does it take to complete a challenging maze? A group of students solved a challenging maze and recorded the time (in seconds) it took to finish. The data is displayed below:

857673439859941068569
771031017459639577

a) Create a stem-and-leaf plot for this data. It is recommended that you do this first on scratch paper. When you enter the values below, please put your leaves into numerical order, from least to greatest.


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Key: 4 | 3 =


b) Next, we will build a "frequency table" that can be used to make a histogram. The frequency table will break the data into groups (sometimes called "classes") and displays how many numbers from the data were in each group. Fill out the frequency table below. Hint: Your stem-and-leaf plot above put the data in order for you. Filling out the frequency table below just involves counting!

ClassFrequeny (count)
43 to 55.9
56 to 68.9
69 to 81.9
82 to 94.9
95 to 107.9