Question

two-way table scenario
the table categorizes drivers into age groups (under 30, 30–50, over 50) and whether they regularly use a navigation system (yes, no). data in the table is based on a fictional dataset.

age group	uses navigation (yes)	does not use navigation (no)	total
30–50	400	100	500
over 50	150	350	500
total	750	750	1,500

what is the marginal frequency of drivers who use navigation systems across all age groups?
options: 500, 1,500, 0, 750

Explanation:

Step1: Recall Marginal Frequency

Marginal frequency for a category (here, "Uses Navigation (Yes)") is the total count of that category across all groups.

Step2: Locate the Total for "Yes"

In the two - way table, the "Total" row for "Uses Navigation (Yes)" gives the marginal frequency. From the table, the value in the "Total" row and "Uses Navigation (Yes)" column is 750.

Answer:

750