The Mean and 95% Confidence Interval Bars for Four Data

question 23

Multiple Choice

The mean and 95% confidence interval bars for four data sets are shown in the figure. Which of the data sets most likely has a standard deviation of 32 and a sample size of 81?
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• A) Plot A
• B) Plot B
• C) Plot C
• D) Plot D

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Definitions:

Graph

A visual representation of data or mathematical functions, typically displayed using lines, bars, or points on two axes.

Vertices

Points where two or more lines, edges, or curves meet, often used to define the corners of geometric shapes or graphs.

Ellipse

An ellipse is a curve on a plane that surrounds two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.

Center

The midpoint or central point of a geometric shape or object.