number of cars by make owned by 100 one-car owners

To determine the number of cars by make owned by 100 one-car owners, you would need information about the specific makes of cars owned by these individuals. Without that information, I cannot provide an exact answer.

However, I can explain a general approach to estimate the number of cars by make owned by the 100 one-car owners:

1. Survey: Conduct a survey among the 100 one-car owners to gather information about the make of their cars. You can ask them simple questions like "What make is your car?" or provide a list of common car makes for them to select from.

2. Data Collection: Collect the responses from the survey, and record the make of each car. Group the responses based on the make of the cars.

3. Analysis: Once you have the data on car makes, analyze the responses to determine the number of cars by make. Count the number of cars for each make and calculate the percentage or total count of each make.

For example, if among the 100 one-car owners, 60 people reported owning Toyotas, 30 people reported owning Hondas, and 10 people reported owning Fords, you could conclude that among this group of one-car owners, there are 60 Toyotas, 30 Hondas, and 10 Fords.

Remember, the accuracy of the results will depend on the quality of the survey and the representation of the surveyed population.