A statistics professor kept attendance records and recorded the number of absent students per class. This data is displayed in the following histogram with the frequency of each number of absent students shown above the bars. How many total classes do these data represent? Frequency 50 40 30 20 10 ه متنان 12 Histogram 27 46 20 17 0 1 2 3 4 7 5 Number of Students Absent per Class
A statistics professor kept attendance records and recorded the number of absent students per class. This data is displayed in the following histogram with the frequency of each number of absent students shown above the bars.
How many total classes do these data represent?
Histogram: The frequency distribution of a set of values illustrates how frequently each unique value exists. One of the most standard diagrams for visualizing frequency tables is a histogram. It helps in understanding the allocation of the data by visualizing its shape. Even though it closely follows a bar chart, there seem to be significant variances. One of the differences between the histogram and bar chart is that we use the histogram for quantitative data and the bar chart for categorical (or qualitative) data.
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