SOLUTION: I need some help on this problem please: A geologist collects hand-specimen sized pieces of limestone from a particular area. A qualitative assessment of both texture and color

Question 1051018: I need some help on this problem please:
A geologist collects hand-specimen sized pieces of limestone from a particular area. A qualitative assessment of both texture and color is made with the following results. Is there evidence of association between color and texture for these limestones? Explain your answer.
Texture Color Color Color
Light Medium Dark
Fine 4 20 8
Medium 5 23 12
Coarse 21 23 4
Thank you for ANY assistance!

Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
We are asked to analyze an association between two categorical variables
:
We start by summing the rows and columns of our table
:
Fine --4 20 8---32
Medium 5 23 12--40
Coarse 21 23 4--48
:
-------30-66-24-120
:
From the above information we can calculate the row and column percentages
:
Fine --0.125-0.625-0.25-100.0
Medium-0.125-0.575-0.30-100.0
Coarse-0.4375-0.479-0.08-100.00
:
-------0.25---0.55--0.20-100.0
:
Note that our two categorical variables(texture and color) are related in the sample if at least two rows of percentages noticeably differ in the pattern of row percents
:
*************************************************
the pattern of percentages is the same, therefore
texture and color are not related
*************************************************
:

RELATED QUESTIONS
A geologist collects hand-specimen sized pieces of limestone from a particular area. A... (answered by ewatrrr)

Hello. I need help finding the answer to this problem. Vance has a piece of rope that... (answered by Earlsdon)

hi i need help with this problem. i need help on this question: five cards are drawn... (answered by stanbon)

I need help on finding an equation for this problem: A 29 inch rope is cut into 3 pieces, (answered by solver91311,ptaylor)

I really need help with this problem please. A ribbon 113 inches long is cut into... (answered by stanbon)

I am going crazy trying to solve this. Please help. Assume that federal regulations... (answered by stanbon)

I am having issues with this word problem. NEED HELP! A log 78 feet long is to be cut... (answered by stanbon)

hi i need help on this question: five cards are drawn from an ordinary deck of 52... (answered by venugopalramana)

Heyy i really need some help on this question.. give me a hand pleasee. In a circle... (answered by Earlsdon)