Mr. jacobs is going to make a histogram of the test scores from the last math test he gave. he plans to first organize the data into a stem-and-leaf plot and then make the histogram from the stem-and-leaf plot. the test scores are listed below. 79, 82, 65, 61, 94, 97, 84, 77, 89, 91, 90, 83, 99, 71, 68, 77, 87, 85 what is the mode interval of the data?

First, we can create steam-and-leaf plot. with steam-and-leaf plot,  you are  just listing how many numbers you have in certain classes of numbers, and what those numbers are. let us start by ordering test scores from lowest to highest.61, 65, 68, 71, 77, 77, 79, 82, 83, 84, 85, 87, 89, 90, 91, 94, 97, 99.now we can create a leaf-and-stem plot.we split each of this entries into stem and leaf values. stem values are the first digit of a number and leaf values are the second digit of the number. because some number share the same first digit this allows  us to put them in the same class.the mode is the entry that appears most often. mode interval is the interval in which we have most entries.we can see that mode of this data is 77 as this is the entry that appears the most. mode interval would be 8, in this interval we have most entries, six of them to be exact.