The relative frequency that a randomly selected student's favorite exhibit was either butterflies or trains is 0.025.
What is the formula for calculating the joint relative frequency?
Assume you need to compute the joint relative frequency of a certain category inside a larger category.
Then there's the proportion of that specific category's frequency to the total frequency of that large category.
The sum of all the frequency of the survey is;
⇒12+25+17+6
⇒60
The relative frequency for butterflies:
⇒12/60
⇒1/5
⇒0.25
The relative frequency for the train:
⇒6/60
⇒1/10
⇒0.1
The relative frequency that a randomly selected student's favorite exhibit was either butterflies or trains is;
⇒0.25×0.1
⇒0.025
Hence the relative frequency that a randomly selected student's favorite exhibit was either butterflies or trains is 0.025.
To learn more about the relative frequency, refer to https://brainly.com/question/12165221
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