Question

a biologist collects data by observing butterflies at two beaches. the table shows her data. what method was used to calculate the relative frequencies in the table? the relative frequencies were calculated by ? because the ? totals are 1. relative frequencies eyespots no eyespots total bella beach 0.28 0.72 1.00 sunny beach 0.64 0.36 1.00 total 0.46 0.54

Explanation:

Step1: Recall relative - frequency formula

Relative frequency of a category in a row or column is calculated by dividing the frequency of the category by the total of that row or column. In this case, since the row - totals are 1, the relative frequencies were calculated by dividing each cell value by the row total.

Step2: Analyze the table

For each row (Bella Beach and Sunny Beach), the sum of the relative frequencies of "Eyespots" and "No Eyespots" is 1. This indicates that the relative frequencies were calculated row - wise.

Answer:

Dividing each cell value by the row total; row totals