Analysis of Drowning in LA

Method Male Female
Private Swimming Pool 488 219
Bathtub 115 132
Ocean 231 40
Freshwater bodies 155 19
Hottubs 16 15
Reservoirs 32 2
Other Pools 46 14
Pails, basins, toilets 7 4
Other 40 12
Total 1130 457

Because the total for men and women are so different it is better to change the table to row percentages:

Method Male Female
Private Swimming Pool 69.0 31.0
Bathtub 46.6 53.4
Ocean 85.2 14.8
Freshwater bodies 89.1 10.9
Hottubs 51.6 48.4
Reservoirs 94.1 5.9
Other Pools 76.7 23.3
Pails, basins, toilets 63.6 36.4
Other 76.9 23.1

 

Step 1: Graph
Graph > Bar Chart > Values from a table, Two-way table, Cluster > Graph Variables: 'Male' 'Female', Row labels: methods, check Rows are outermost..., Bar Chart Options > Check show y as percent, Within categories at level 1.

Step 2: Test

Stat > Tables > Chisquare test (Table in Worksheet): 'Male' 'Female'
this gives a warning of one expected cell count less than five. Those are for "Pails,,-Female'. This is no problem
1) α=0.05
2) H0: Classifications are independent (no relationship between the Gender and Method)
3) Ha: Classifications are dependent (some relationship between the Gender and Method)
4) p=0.000 < α
5) Reject H0, There are significant differences between the methods of drowning of men and women