Education level political party a conspiracy that reaches to the highest levels of our government
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Education Level & Political Party…A Conspiracy That Reaches to the Highest Levels of Our Government?. A Statistical Investigation By Matt, Katelen, Anna, and Drew. A Description. We were interested in political preference and education level. We also collected extra data on age level.

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Education level political party a conspiracy that reaches to the highest levels of our government

Education Level & Political Party…A Conspiracy That Reaches to the Highest Levels of Our Government?

A Statistical Investigation

By

Matt, Katelen, Anna, and Drew


A description
A Description Reaches to the Highest Levels of Our Government?

  • We were interested in political preference and education level.

  • We also collected extra data on age level


Experimental design
Experimental Design Reaches to the Highest Levels of Our Government?

  • Randomly selected a number 1-350

    • Split page into approx. 21 groups of 20 numbers

    • Selected another random number 1-21 to get sample.


Survey
Survey Reaches to the Highest Levels of Our Government?

  • Script for Survey:

    “Hi, I am from Ferris High School and am conducting a survey for my statistics class. Would you like to participate?”


Survey cont
Survey (Cont.) Reaches to the Highest Levels of Our Government?

1. Of some high school, high school graduate, some college, 2 yr. Degree, 4. Yr. Degree, Masters degree or a Doctorate Degree, what is the highest level of education you have completed?

  • With which political party—democratic, republican, or other—do you consider yourself associated?

    3. Which age group are you in?

    ~ 18-30

    ~ 31-43

    ~ 44-56

    ~ 57+


Data analysis
Data Analysis Reaches to the Highest Levels of Our Government?

  • In order to analyze data, we had to further stratify some of the categories.

    • Education level was split into low ( groups 1, 2, 3) and high ( groups 4, 5, 6, 7).

    • Age group was split into young (18-43) and old (44+).


Education level political party a conspiracy that reaches to the highest levels of our government
Data Reaches to the Highest Levels of Our Government?


Interesting charts
Interesting Charts Reaches to the Highest Levels of Our Government?


More interesting charts
More Interesting Charts Reaches to the Highest Levels of Our Government?


Confidence intervals
Confidence Intervals Reaches to the Highest Levels of Our Government?

1 prop. Z-int: Democrats w/ high education

c = .99 47.6% - 99.7

1 prop. Z-int: Republicans w/ High education

c = .99 36.9% - 84.4%

1 prop. Z-int: Old Democrats

c = .99 34.6% - 91.6%

1 prop. Z-int: Old Republicans

c = .99 30.9% - 80.1%


More data analysis
More Reaches to the Highest Levels of Our Government?Data Analysis

Because all counts are greater than 1 and less than 20% of counts are less than 5, Chi-squared procedures are reasonable to test education level against political party preference.

Is there an association between political party and education level?

Chi-sq. Test of Independence

X² = .5833 p = .4450

-Fail to reject the null.


Data analysis again
Data Analysis…Again Reaches to the Highest Levels of Our Government?

Because all counts are greater than 1 and less than 20% of counts are less than 5, X² procedures are reasonable to test political party preference against age.

Does an association exist between age level and political party preference?

Chi-sq. Test of Independence

X² = .2658 p= .6061

Fail to reject the null.


Conclusions
Conclusions Reaches to the Highest Levels of Our Government?

  • Both p-values were well above the significance level of .05.

    • There is not enough evidence to suggest an association between education level and political party preference.

    • There is not enough evidence to suggest an association between age and political preference.

  • Response bias is always an issue, but because we properly incorporated randomization into our study, that bias should have been accounted for.

    • Originally expected a strong association between in both instances.