The mean GPA for 105 residents of the local apartment complex is 1.8. What is the best point estimate for the mean GPA for all residents of the local apartment complex?

The best point estimate for the mean GPA of all residents in the local apartment complex is simply the mean GPA of the sample, which is 1.8. This value serves as a representative statistic for the entire population, suggesting that, based on your sample of 105 residents, the average GPA is 1.8. When we gather data, such as from a sample, it's essential to realize that this estimate can vary. However, if the sample is well-chosen and random, it offers a strong basis for estimating the population mean GPA. So, in this case, stick with 1.8 as your guiding star!