Question

3. (3+3=6pt) Suppose you want to conduct a survey of US adults to measure the relative importance of three features of an electric car: charging time, driving range, and price, in making . a decision if they would buy an electric car. Problems 3(a) and 3(b) are both based on this scenario. 3(a) Construct a constant sum rating scale to determine the importance of these three factors to the respondent. [The scale should be prepared such that it can be included as a question in a survey. Your answer should be complete and clearly written. The context of the question should be clear, that is, it should be clear to the respondent what information you are asking her to provide.] Answer: 3(b) Construct itemized rating scales to determine the importance of these three factors to the respondent. [The scales should be prepared such that they can be included as questions in a survey. Your answer should be complete and clearly written. The context of the question should be clear, that is, it should be clear to the respondent what information you are asking her to provide.] Answer:

Answer 1

3(a) A constant sum rating scale would ask respondents to distribute a fixed number of points among charging time, driving range, and price based on their perceived importance. For example, "Distribute 100 points among charging time, driving range, and price to reflect their importance in your decision to buy an electric car."

3(b) Itemized rating scales would involve separate questions for each feature, asking respondents to rate the importance of charging time, driving range, and price individually. For instance, "On a scale of 1 to 10, how important is charging time when considering buying an electric car?" Similar questions would follow for driving range and price.

Step-by-step explanation:

3(a) In a constant sum rating scale, respondents are allocated a fixed sum of points (e.g., 100) that they distribute among the given options based on their perceived importance. By asking participants to allocate points among charging time, driving range, and price, it creates a comparative measure of their importance relative to each other in the decision-making process of buying an electric car.

3(b) Itemized rating scales involve separate questions for each feature, allowing respondents to rate the importance of charging time, driving range, and price independently. This method provides a more detailed understanding of the importance of each factor individually without directly comparing them to each other. Using a numerical scale (e.g., 1 to 10) helps gauge the perceived significance of each feature in the decision-making process, offering specific insights into respondent preferences regarding electric car features.