exst 2201 exam 1 Questions with Detailed Verified Answers

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exst 2201 exam 1 Questions with
Detailed Verified Answers


Question: T/F The distribution of a column of data is given by its shape,
location, and symmetry


Ans: False


Question: A distribution of a column of data refers to what three
characteristics of the column of data?


Ans: The shape, location, and spread of the column of data


Question: What one of the following answers is true about a parameter?


Ans: A constant that gives population information


Question: How is a gap distinguished from an extreme value?


Ans: A gap is fits as part of the overall shape. An extreme value is outside
the overall shape


Question: Why is it important to look at the shape of a column of data before
interpreting any statistics?

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Ans: To see if the data is unimodal, symmetrical, and without any
exceptions.


Question: Sum of squares is what type of measure of spread?


Ans: A raw measure of spread


Question: What is the sum of squares for the data set below


10,20 ,30


Ans: 200


Question: What is the mean for the following set of data


15, 20, 25, 30, 35, 40


Ans: 27.5


Question: How many data values are less than the value of the third quartile
(Q3)


Ans: Three quarters (75%) of the data values


Question: What is the value of the lower fence, and of the upper fence, in the
five-number summary below?


{0.2, 6.05, 6.45, 6.95, 8.2}