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Practice Problems
Differentiating Between
Central Tendency Spread Symmetry
Problem #1
You have been asked to examine 2010 US census data to determine the average levels of education attained.
First, you decide to determine the most common or frequent level of education attend.
Advance the slide to see the options
You have been asked to examine 2010 US census data to determine the average levels of education attained.
First, you decide to determine the most common or frequent level of education attend.
Which is it?
Advance the slide to see the answer
Central Tendency Spread Symmetry
You have been asked to examine 2010 US census data to determine the average levels of education attained.
First, you decide to determine the most common or frequent level of education attend.
Advance the slide to see the explanation
Which is it?
Central Tendency Spread Symmetry
You have been asked to examine 2010 US census data to determine the average levels of education attained.
First, you decide to determine the most common or frequent level of education attend.
“most common” is related to centeredness
Explanation
Advance the slide to see the next problem
Which is it?
Central Tendency Spread Symmetry
Problem #2
A study was undertaken to determine the impact of a new therapy on troubled teens in general. A random sample of a 940 teenagers who were given this therapy was compared with another random sample of 950 teenagers who were given a traditional therapy. Both are tested for evidence of improvement using a 50 point index
First, you decide to find out the spread or difference between the lowest and highest index scores.
Advance the slide to see the options
A study was undertaken to determine the impact of a new therapy on troubled teens in general. A random sample of a 940 teenagers who were given this therapy was compared with another random sample of 950 teenagers who were given a traditional therapy. Both are tested for evidence of improvement using a 50 point index
First, you decide to find out the spread or difference between the lowest and highest index scores.
Advance the slide to see the answer
Which is it?
Central Tendency Spread Symmetry
A study was undertaken to determine the impact of a new therapy on troubled teens in general. A random sample of a 940 teenagers who were given this therapy was compared with another random sample of 950 teenagers who were given a traditional therapy. Both are tested for evidence of improvement using a 50 point index
First, you decide to find out the spread or difference between the lowest and highest index scores.
Advance the slide to see the explanation
Which is it?
Central Tendency Spread Symmetry
A study was undertaken to determine the impact of a new therapy on troubled teens in general. A random sample of a 940 teenagers who were given this therapy was compared with another random sample of 950 teenagers who were given a traditional therapy. Both are tested for evidence of improvement using a 50 point index
First, you decide to find out the spread or difference between the lowest and highest index scores.
Advance the slide to the next problem
We are examining the difference between the lowest & highest scores.
This is a “spread” concept.
ExplanationWhich is it?
Central Tendency Spread Symmetry
Problem #3
The director of a health clinic has asked you to help her analyze data from the results of patient systolic blood pressure readings.
You decide to compute the average systolic pressure for just this data set.
Advance the slide to see the options
Patients Blood Pressure
1 75
2 85
3 85
4 95
5 95
6 97
7 97
8 97
9 102
10 102
11 102
12 102
13 110
14 115
15 115
The director of a health clinic has asked you to help her analyze data from the results of patient systolic blood pressure readings.
You decide to compute the average systolic pressure for just this data set.
Advance the slide to see the answer
Patients Blood Pressure
1 75
2 85
3 85
4 95
5 95
6 97
7 97
8 97
9 102
10 102
11 102
12 102
13 110
14 115
15 115
Which is it?
Central Tendency Spread Symmetry
The director of a health clinic has asked you to help her analyze data from the results of patient systolic blood pressure readings.
You decide to compute the average systolic pressure for just this data set.
Advance the slide to see the explanation
Which is it?
Central Tendency Spread Symmetry
Patients Blood Pressure
1 75
2 85
3 85
4 95
5 95
6 97
7 97
8 97
9 102
10 102
11 102
12 102
13 110
14 115
15 115
The director of a health clinic has asked you to help her analyze data from the results of patient systolic blood pressure readings.
You decide to compute the average systolic pressure for just this data set.
Advance the slide to the next problem
When you take the average of a distribution you are looking for a the
center point that is exactly in the middle.
Explanation
Patients Blood Pressure
1 75
2 85
3 85
4 95
5 95
6 97
7 97
8 97
9 102
10 102
11 102
12 102
13 110
14 115
15 115
Which is it?
Central Tendency Spread Symmetry
Problem #4
You have been asked to examine 2010 Utah census data regarding the number of person’s per household that speak a foreign language.
You first wish to determine to see if the distribution is normal or not.
Advance the slide to see the options
Advance the slide to see the answer
You have been asked to examine 2010 Utah census data regarding the number of person’s per household that speak a foreign language.
You first wish to determine to see if the distribution is normal or not.
Which is it?
Central Tendency Spread Symmetry
Advance the slide to see the explanation
You have been asked to examine 2010 Utah census data regarding the number of person’s per household that speak a foreign language.
You first wish to determine to see if the distribution is normal or not.
Which is it?
Central Tendency Spread Symmetry
You have been asked to examine 2010 Utah census data regarding the number of person’s per household that speak a foreign language.
You first wish to determine to see if the distribution is normal or not.
Any time you are considering how the data is laid out or it’s
distribution you are examining symmetry
Explanation
Advance the slide to see the next problem
Which is it?
Central Tendency Spread Symmetry
Problem #5
You are working with a newly formed school district. Before you begin your work as a school psychologist you want to learn more about the nature of the families and those living in the boundaries. You go to the department of vital statistics and are given census data regarding the socio-economic conditions of families in the new district.
You decide to determine how much income differs across the district.
Advance the slide to see the options
Advance the slide to see the answer
You are working with a newly formed school district. Before you begin your work as a school psychologist you want to learn more about the nature of the families and those living in the boundaries. You go to the department of vital statistics and are given census data regarding the socio-economic conditions of families in the new district.
You decide to determine how much income differs across the district.
Which is it?
Central Tendency Spread Symmetry
Advance the slide to see the explanation
You are working with a newly formed school district. Before you begin your work as a school psychologist you want to learn more about the nature of the families and those living in the boundaries. You go to the department of vital statistics and are given census data regarding the socio-economic conditions of families in the new district.
You decide to determine how much income differs across the district.
Which is it?
Central Tendency Spread Symmetry
You are working with a newly formed school district. Before you begin your work as a school psychologist you want to learn more about the nature of the families and those living in the boundaries. You go to the department of vital statistics and are given census data regarding the socio-economic conditions of families in the new district.
You decide to determine how much income differs across the district.
When we are examining the idea of how data “differs” in one distribution this is a spread concept
Explanation
The end
Central Tendency Spread Symmetry
Which is it?
