64. A nonprofit organization is determining which existing donors will donate again for a current campaign. The organization decides to look at its donor database for all donors who have donated two or more × over the past five years. Which measures should be used to determine the probability of receiving a donation from an existing donor over time?
Answer: A
A score
To determine the probability of receiving a donation from an existing donor over time, a score is the most relevant measure. This scoring system can effectively quantify donor behavior and predict their likelihood of future contributions based on historical data.
A) A score
A score is a numerical representation that can aggregate various donor characteristics and behaviors, allowing the organization to assess which donors are more likely to contribute again. By analyzing donation frequency and amount, a score can provide insights into donor loyalty and potential future giving.
B) F-statistic
The F-statistic is primarily used in the context of variance analysis to compare the variances among different groups. While it can be useful in statistical modeling to understand relationships between variables, it does not directly measure donor behavior or predict future donations.
C) Median
The median is a measure of central tendency that indicates the middle value in a dataset. Although it can provide insights into the average donation amount, it does not effectively capture the probability of a donor making future contributions based on their donation history.
D) R-squared
R-squared is a statistical measure that indicates the proportion of variance in a dependent variable that can be explained by an independent variable. While it may provide insights into the effectiveness of a prediction model, it does not serve as a direct measure for predicting the likelihood of future donations from individual donors.
Conclusion
A score is definitively the best measure for predicting future donations from existing donors because it consolidates relevant data into a usable metric. In contrast, the other options fail to provide a direct assessment of donor behavior or the likelihood of repeat contributions, making them unsuitable for the nonprofit's objective.