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: 1,500; 0; 500; 750

Explanation:

Step1: Identify the column for "Uses Navigation (Yes)"

We look at the "Uses Navigation (Yes)" column in the two - way table.

Step2: Sum the values in this column

The values in the "Uses Navigation (Yes)" column are 200 (for Under 30), 400 (for 30 - 50), and 150 (for Over 50). To find the marginal frequency, we sum these values: $200 + 400+150=750$.

Answer:

750