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Help pls i have trouble understanding this concept

Help pls i have trouble understanding this concept-example-1
User Bcholmes
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1 Answer

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25 votes

Answer:


(36)/(117)

Explanation:

You want the numbers from the 2-way table that tell you the percentage of customers preferring Cable Only is 30.7%.

Marginal distribution

You can think of the "marginal distribution" as the set of numbers in the margin(s) of the two-way table, expressed as a percentage of the total at lower right.

The numbers in the right margin are 39, 36, 42. As percentages of the total (117), these are ...

  • 39/117 ≈ 33.33%
  • 36/117 ≈ 30.77%
  • 42/117 ≈ 35.90%

The total, as with any distribution, is (33.33 +30.77 +35.90)% = 100%.

The two numbers that give you 30.7% are 36 and 117.

User Ben Spi
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