3.29
(a) Dot Plot
(b) Histogram
Telephone's Call Log Length
Telephone's Call Log Length
30
25
60
50
Frequency
Frequency
20
15
10
40
30
Frequency
20
10
0
5
0
1 2 3 4 5 6 7 8 10 12 13 18 20 26 29
Bin
Call Length
Bin
Frequency
5
50
10
7
15
4
20
2
25
0
30
2
More
The Histogram shows the information about the 65 numbers of telephone call log’s length during
the last week of July. We have created a histogram using 6 bins and 6 different frequencies.The horizontal
axis is the call length, range of values and the vertical axis is frequency. The range of (0 to 5) is the
highest bar on the above histogram and this range is occurs most frequently. It dropped suddenly in the
range of (5 to 10) and then it continued to decline steadily, reaching the range of (25 to 30) and hitting
zero frequency in the range of (20 to 25). The above histogram shows a right-skewed distribution (long
right tail) because many data values occur on the left side and a smaller number of data on the right side.