Question

Forty students registered in the class. The attendance records revealed the following number of absenses for each students: 0, 2, 0, 6, 3, 6, 7, 1, 1, 2, 1, 1, 3, 4, 5, 4, 0, 0, 1, 1, 2, 2, 2, 3, 5, 8, 4, 2, 1, 0, 2, 1, 0, 6, 8, 1, 2, 1, 1, 0. • Steps: 1. Create a grouped frequency table in 2-miss intervals. 2. Create a grouped frequency table in 4-miss intervals. 3. Create a grouped frequency table in 6-miss intervals. 4. Which of these tables provide the clearest picture of the data? Explain why you think so.

Answer 1

Here the data given on attendance records revealed the following number of absences for each Students among 40 students.

Now 2-miss intervals, 4-miss intervals, 6-miss intervals are given by as follows,

Steps 4:-

2-miss intervals frequency table provide the clearest picture of the data.

Because this table shows how absence frequency are distributed and is more clear to see. And when we take 4-miss intervals or 6-miss intervals than the number of intervals decreases so the distribution of frequency or observation can not see clearly. For example in 6- miss intervals table the 1st interval (0-6) contain 92.5% observations of total observation so we can not say how many absences each student had because the grouping are so high.