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Basic Concepts in Statistics

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Questions and Answers

What is the weighted mean of Dillon's grades for the given semester?

$3.5$

$2.5$ (correct)

$3.0$

$2.0$

What is the median of the blood pressure readings of the seven mothers?

$415$

$420$

$407$ (correct)

$398$

What is the mode of the physics exam scores?

None

Unimodal

Cannot be determined from the information given

Bimodal (correct)

What is the median of the 8 randomly selected novel page counts?

$411$ (A) Signup and view all the answers

What is the average age of the five contestants in the Statistics Quiz Bee?

$18$ (D) Signup and view all the answers

What is the total number of units Dillon is taking?

$14$ (D) Signup and view all the answers

What is the sum of the products of the grades and their corresponding units?

$14$ (C) Signup and view all the answers

What is the value of $\sigma(x \cdot w)$?

$14$ (A) Signup and view all the answers

What is the value of $\frac{\sigma(x \cdot w)}{\sigma w}$?

$2.5$ (B) Signup and view all the answers