CHI square test - finding degree of freedom

[gxc9800]

Homework Statement

i have problem of finding the degree f freedom for this question. the ans for v is 3 , but my ans is v=n-1 , where n = 6 , so my v=5...

Homework Equations

The Attempt at a Solution

 

[RUber]

For the Chi Squared test, there is a minimum frequency needed for it to be accurate. I would expect that some of the less frequent observations were grouped or "binned" together to reduce your operational "n".

 

[Ray Vickson]

Homework Statement

i have problem of finding the degree f freedom for this question. the ans for v is 3 , but my ans is v=n-1 , where n = 6 , so my v=5...

Homework Equations

The Attempt at a Solution

Please type out the problem; you are not supposed to post thumbnails. (Read Vela's 'pinned' post called 'Guidelines for students and helpers', especially topic 4.) This morning I could not read your thumbnail on the medium I was using then.

 

[gxc9800]

Please type out the problem; you are not supposed to post thumbnails. (Read Vela's 'pinned' post called 'Guidelines for students and helpers', especially topic 4.) This morning I could not read your thumbnail on the medium I was using then.

the question contains boxes. if i type out , it would look weird... so i would rather post the image of the original question

 

[RUber]

Did combining the lower frequency observations solve your problem getting to v=3?
I think the general rule is frequency $\geq$ 5.

 

[gxc9800]

Did combining the lower frequency observations solve your problem getting to v=3?
I think the general rule is frequency $\geq$ 5.

thanks! question solved!