EBook Problems EDA Center - Revision history

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Text replacement - "{{translate|pageName=http://wiki.stat.ucla.edu/socr/" to ""{{translate|pageName=http://wiki.socr.umich.edu/"

JayZzz at 21:40, 3 January 2009

2009-01-03T21:40:46Z

JayZzz at 07:43, 3 January 2009

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2009-01-03T07:37:05Z

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JayZzz at 19:54, 23 November 2008

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2008-11-20T08:31:54Z

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JayZzz at 02:12, 20 November 2008

2008-11-20T02:12:01Z

JayZzz: New page: == EBook Problems Set - Measures of Central Tendency Problems== ===Problem 1=== Suppose that in a certain country, the ...

2008-11-19T03:07:51Z

New page: == EBook Problems Set - Measures of Central Tendency Problems== ===Problem 1=== Suppose that in a certain country, the ...

New page

==[[EBook_Problems | EBook Problems Set]] - [[AP_Statistics_Curriculum_2007_EDA_Center | Measures of Central Tendency]] Problems==

===Problem 1===
Suppose that in a certain country, the average yearly income for 75% of the population is below average, what would you use as the measure of center and spread?

*Choose one answer.

:''(a) Mean and interquartile range

:''(b) Mean and standard deviation

:''(c) Median and interquartile range

:''(d) Mean and standard deviation

===Problem 2===
According to a story in the Guardian newspaper in the U.K., the mean wage for a Premiership player in 2001-2002 in the U.K. was 600,000 pounds. Which of the following is most likely true?

*Choose one answer.

:''(a) About as many Premiership players make more than 600,000 pounds as make less.''

:''(b) Most Premiership players make close to 600,000 pounds.''

:''(c) Most Premiership players make less than 600,000 pounds.''

:''(d) Most Premiership players make more than 600,000 pounds.''

'''3. If the observations larger than 40 are deleted in the following histogram, what will happen to the value of the mean?'''

'''Choose one answer.'''

:''(a) It will become larger.''

:''(b) It will become smaller.''

:''(c) Need more information to answer this question.''

:''(d) It will not change.''

← Older revision		Revision as of 19:55, 3 March 2020
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	* SOCR Home page: http://www.socr.ucla.edu		* SOCR Home page: http://www.socr.ucla.edu

−	{{translate\|pageName=http://wiki.~~stat~~.~~ucla~~.edu~~/socr~~/index.php/EBook_Problems_EDA_Center}}	+	"{{translate\|pageName=http://wiki.socr.umich.edu/index.php/EBook_Problems_EDA_Center}}

← Older revision		Revision as of 21:40, 3 January 2009
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	:''(d) 15		:''(d) 15
	{{hidden\|Answer\|(a)}}		{{hidden\|Answer\|(a)}}
		+
		+	===Problem 5===
		+	Seven students each studied different amounts for an exam. In hours, their study times were 3 hours, 5 hours, 11 hours, 6 hours, 4 hours, 2 hours, and 4 hours. What is the median number of study hours?
		+
		+	*Choose one answer.
		+
		+	:''(a) 4.5
		+
		+	:''(b) 6
		+
		+	:''(c) 11
		+
		+	:''(d) 5
		+
		+	:''(e) 4
		+	{{hidden\|Answer\|(e)}}

← Older revision		Revision as of 07:43, 3 January 2009
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	:''(c) Mode, because it can be used with observational or quantitative data		:''(c) Mode, because it can be used with observational or quantitative data
		+	{{hidden\|Answer\|(a)}}
		+
		+	===Problem 4===
		+	Five students were asked how many credits they are taking this semester. They answered 18 credits, 15 credits, 17 credits, 12 credits, and 16 credits. What is the median number of credits taken?
		+
		+	*Choose one answer.
		+
		+	:''(a) 16
		+
		+	:''(b) 17
		+
		+	:''(c) 12
		+
		+	:''(d) 15
	{{hidden\|Answer\|(a)}}		{{hidden\|Answer\|(a)}}

@@ Line 42: / Line 42: @@
 <hr>
-* [[AP_Statistics_Curriculum_2007_EDA_Pics | Back to Ebook]]
+* [[EBook | Back to Ebook]]
 * SOCR Home page: http://www.socr.ucla.edu
-{{translate|pageName=http://wiki.stat.ucla.edu/socr/index.php?title=EBook_Problems_EDA_Center}}
+{{translate|pageName=http://wiki.stat.ucla.edu/socr/index.php/EBook_Problems_EDA_Center}}

← Older revision		Revision as of 07:36, 3 January 2009
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	:''(d) Most Premiership players make more than 600,000 pounds.''		:''(d) Most Premiership players make more than 600,000 pounds.''
		+
		+	===Problem 3===
		+	Statisticians often use the term "robust" when referring to a statistical measure or test. Which of the following is an example of a robust measure of center?
		+
		+	*Choose one answer.
		+
		+	:''(a) Median, because it is resistant to outliers
		+
		+	:''(b) Mean, because it is the most commonly used measure of center
		+
		+	:''(c) Mode, because it can be used with observational or quantitative data
		+	{{hidden\|Answer\|(a)}}

← Older revision		Revision as of 19:54, 23 November 2008
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	* SOCR Home page: http://www.socr.ucla.edu		* SOCR Home page: http://www.socr.ucla.edu

−	{{translate\|pageName=http://wiki.stat.ucla.edu/socr/index.php?title=~~EBook_Problems_EDA_Pics~~}}	+	{{translate\|pageName=http://wiki.stat.ucla.edu/socr/index.php?title=EBook_Problems_EDA_Center}}

← Older revision		Revision as of 08:31, 20 November 2008
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	:''(d) Most Premiership players make more than 600,000 pounds.''		:''(d) Most Premiership players make more than 600,000 pounds.''

−	~~===Problem 3===~~
−	~~If the observations larger than 40 are deleted in the following histogram, what will happen to the value of the mean?~~
−
−	*Choose one answer.
−
−	~~:''(a) It will become larger.''~~
−
−	~~:''(b) It will become smaller.''~~
−
−	~~:''(c) Need more information to answer this question.''~~
−
−	~~:''(d) It will not change.''~~

← Older revision		Revision as of 08:26, 20 November 2008
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	:''(d) It will not change.''		:''(d) It will not change.''
		+
		+
		+	<hr>
		+	* [[AP_Statistics_Curriculum_2007_EDA_Pics \| Back to Ebook]]
		+	* SOCR Home page: http://www.socr.ucla.edu
		+
		+	{{translate\|pageName=http://wiki.stat.ucla.edu/socr/index.php?title=EBook_Problems_EDA_Pics}}

@@ Line 27: / Line 27: @@
 :''(d) Most Premiership players make more than 600,000 pounds.''
-'''3. If the observations larger than 40 are deleted in the following histogram, what will happen to the value of the mean?'''
+===Problem 3===
-'''Choose one answer.'''
+*Choose one answer.
 :''(a) It will become larger.''