Question

creating a conditional relative frequency table by row
high school students were surveyed about which math and science topics they preferred. they were asked to choose algebra or geometry, and biology or chemistry. the results are shown in the frequency table below.
use this table to create a relative frequency table by row.
drag each tile to the correct cell in the table.

	algebra	geometry	total
chemistry	46	20	66
total	113	45	158

100% 72% 30% 28% 100% 27% 100% 73% 70%

Explanation:

Step1: Calculate relative - frequency for Biology row

For Algebra in Biology row: $\frac{67}{92}\approx 73\%$. For Geometry in Biology row: $\frac{25}{92}\approx 27\%$. The total for Biology row is 100%.

Step2: Calculate relative - frequency for Chemistry row

For Algebra in Chemistry row: $\frac{46}{66}\approx 70\%$. For Geometry in Chemistry row: $\frac{20}{66}\approx 30\%$. The total for Chemistry row is 100%.

Step3: Total row percentages

The totals for each column in the relative - frequency table will be different from 100% in this case. But for the overall concept of row - relative frequency, each row total is 100%.

Answer:

	Algebra	Geometry	Total
Chemistry	70%	30%	100%
Total	-	-	-