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Visual Chi-Square

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Now let’s try another one.

First, look to the extreme right side.
If we forget about gender and lump people together, then still 50% like SUVS and 50% prefer Sports Cars.

Look at the Male Column, only 20% like SUVs, most like Sports Cars! It is reversed for the women! But, if we combine them, it is still a 50-50 split. Each column sure does differ from 50-50, doesn't it? They look significantly different from 50-50. That's a visual chi-square.

Car preference is Dependent on Gender. Gender flunked the Test of Independence. Car dealers in this scenario better know about this gender difference.

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