Stats Exam Questions Essay

Submitted By tgillies28
Words: 3620
Pages: 15

Exam 1

Correct answers are in bold

Question 1

When I give a presentation where I summarize the data from the past month in an informative way, I am using which branch of statistics? Inferential Statistics

Modal Based Statistics Correct! Descriptive Statistics

Management Biased Statistics

Question 2
5 / 5 pts
<p>When I take the data that I have received from our monthly reports and use that data to project sales for the next month I am using:</p>
When I take the data that I have received from our monthly reports and use that data to project sales for the next month I am using: Forward Thinking Statistics Correct! Inferential Statistics

Descriptive Statistics

Detailed Statistics

Question 3
5 / 5 pts
<p>When I refer to the number of times that our sales projects were correct I am referring to:</p>
When I refer to the number of times that our sales projects were correct I am referring to: significance level

maturity level

projection level Correct! confidence level

Question 4
5 / 5 pts
<p>When I have the actual unemployment numbers for the month of July I have what?</p>
When I have the actual unemployment numbers for the month of July I have what? parameter Correct! data

datum

value added

Question 5
5 / 5 pts
<p>When I represent nominal data and their counts I can use what to compare their frequencies?</p>
When I represent nominal data and their counts I can use what to compare their frequencies? Distributed Distribution

Scattered Frequency Distribution

Fluid Distribution Correct! Frequency Distribution

Question 6
5 / 5 pts
<p><img src="http://www.jcimjournal.com/admin/ewebeditor/UploadFile/2010712211010857.gif" alt="Histogram" width="118" height="75"> What type of histogram is this?</p> What type of histogram is this?
Correct!

positively skewed

bimodal

negatively skewed

symmetric

Question 7
5 / 5 pts
<p><img src="http://www.mathamazement.com/images/Everyday-Math/05_Miscellaneous/05_05_Advanced-Topics/05_05_05_Normal-Distribution/50-toss-histogram.JPG" alt="" width="96" height="78"> What type of histogram is this?</p> What type of histogram is this? negatively skewed

unit square moded

positively skewed Correct! Bell-shaped

Question 8
5 / 5 pts
<p>1,15,4,7,9 For this data what is the Median?</p>
1,15,4,7,9 For this data what is the Median? 4

12 Correct! 7

15

Question 9
5 / 5 pts
<p>For the following data the mean is 5: 1,3,9,7,5</p>
For the following data the mean is 5: 1,3,9,7,5
Correct!

True

False

Question 10
5 / 5 pts
<p>1,4,5,5,7,6,12,4,3,4 - For this data what is the mode?</p>
1,4,5,5,7,6,12,4,3,4 - For this data what is the mode? 6.5

7 Correct! 4

5

Question 11
5 / 5 pts
<p>Find the variance for 12, 6, 22, 31, 23, 13, 15, 17, 21</p>
Find the variance for 12, 6, 22, 31, 23, 13, 15, 17, 21 17.78

7.36

9.27 Correct! 54.19

Question 12
5 / 5 pts
<p><span style="font-family: arial;">Find the standard deviation for the following data 9,10,11,7,13</span></p>
Find the standard deviation for the following data 9,10,11,7,13 4 Correct! 2

10

7

Question 13
5 / 5 pts
<p>The standard deviation of the following data is 0, -5, -3, 6, 4, -4, 1, -5, 0, 3</p>
The standard deviation of the following data is 0, -5, -3, 6, 4, -4, 1, -5, 0, 3 –.30

12.25

15.12 Correct! 3.89

Question 14
5 / 5 pts
<div id="question_new_question_text" class="question_text user_content enhanced"> <p>The first quartile of the following data is 15.6:</p> <p>10.5 14.7 15.3 17.7 15.9 12.2 10.0 14.1 13.9 18.5 13.9 15.1 14.7</p> </div>
The first quartile of the following data is 15.6:
10.5 14.7 15.3 17.7 15.9 12.2 10.0 14.1 13.9 18.5 13.9 15.1 14.7 True Correct! False

Question 15
5 / 5 pts
<div id="question_new_question_text"…