All Questions
9 questions
1
vote
2
answers
88
views
What hypothesis test should be used for two categorical variables in Likert scale?
I'll give an example.
Let's say I conducted a health survey in a hospital. I asked two questions. The first question is: 'I take medication to sleep well' and the second is: 'I feel unwell in the ...
- 11
0
votes
1
answer
128
views
Chi square goodness of fit test or individual test for proportion or both
I have dataset which looks like below -
Categories
Sample 1
Sample 2 ....
Sample 9
Reference Proportion
A
89
91
85
0.89
B
0
1
3
0.01
C
2
1
1
0.02
...
6
8
7
0.06
I
1
2
1
0.005
I want to test ...
- 41
1
vote
1
answer
47
views
Hypothesis testing: formulation and rejection
Suppose I want to compare a book A with a book B to see if a particular word occurs significantly more or less often in either book. If I use the chi-square test (α = 0.05, one degree of freedom, ...
- 61
2
votes
0
answers
37
views
Establishing significance of crime statistics variation in a changing population over time [closed]
On the planet Zorblax, there are 2 ethnic groups, one much larger in number than the other.
The National Statistics Body of Zorblax wants to determine, with significance, if one group commits a ...
- 175
5
votes
1
answer
653
views
Chi square test
I am reading about chi-square test but came across Chi square test of independence, Chi square test for goodness of fit and Chi square test of variance. I am confused and unable to find out what is ...
- 275
0
votes
0
answers
629
views
How to Determine if Group A is Significantly Better than Group B
Edit: Please Find the Table in Image
I am conducting research on 2 groups and lets call them A and B and these 2 groups are 2 Variables of my dataset. These are categorical data.. Below is sample of ...
- 131
0
votes
0
answers
70
views
Z test vs Chi Square Test
I am faced with the following question:
The proportion of US smokers $(p_1) = 136/157$.
The proportion of Non-US smokers $(p_2) = 21/157$.
To test $H_0 : p_1 = p_2$ versus $H_1 : p_1 > p_2$ at 5% ...
- 215
2
votes
2
answers
2k
views
T Test or Chi Square?
There are 2 variables, City and No Of Matches won.
Variables:
1City
Sydney
Canberra
2No Of Matches Won?
Sydney: 200 out of 300
Canberra: 210 out of 300
Question: Is team Canberra ...
- 21
8
votes
4
answers
2k
views
$\chi^2$ tabulated value
I noticed that the critical $\chi^2$ value increases as the degrees of freedom increase in a $\chi^2$ table. Why is that?
- 81