Male Mormon crickets Anabrus simplex sing to attract makes A

Male Mormon crickets (Anabrus simplex) sing to attract makes. A field researcher estimated the duration (minutes) of 51 unsuccessful songs the time until the singing male gave up singing. Make a suitable summary figure.. What do you suspect about normality Use a suitable graphical method to get a better insight. What do you conclude about (he normality and nature of the data?

Solution

The data can be summarised in grouped form as

b) As can be seen there are more frequency initially which decreases as we go on, So the data is not normally distributed

c)

the Histogram for the data looks like

d) The data is not normal its negatively skewed

Class interval	Frequency
0 - 2	16
2 - 4	15
4 - 6	10
6 - 8	4
8 - 10	2
> 10	4