Question

question: after entering data from a probability distribution into a ti84 calculator and following the steps above, your screen displays several symbols and values. which symbol represents the mean? a. ox b. σx c. n d. x

Explanation:

Step1: Recall statistical symbols

In statistics, $\overline{x}$ represents the sample mean.

Step2: Analyze each option

• Option A: $\sigma x$ usually represents the standard deviation of a population (if $x$ is a variable).
• Option B: $\sum x$ represents the sum of all values of the variable $x$.
• Option C: $n$ represents the sample size.
• Option D: $\overline{x}$ is the correct symbol for the mean.

Answer:

D. $\overline{x}$