Question

fill in the blank
the _ is the best point estimate of the population mean.
the _ is the best point estimate of the population mean.
sample mean
sample standard deviation
sample data
sample size

Explanation:

In statistics, the sample mean is a fundamental estimator. It is calculated as $\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$, where $x_{i}$ are the sample observations and $n$ is the sample size. By the properties of unbiased estimators (under appropriate conditions like simple random sampling), the sample mean $\bar{x}$ has an expected value equal to the population mean $\mu$, i.e., $E(\bar{x})=\mu$. This makes it the best point - estimate for the population mean among the given options. The sample standard deviation estimates the population standard deviation, sample data is the raw information, and sample size is just the number of observations.

Answer:

sample mean