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In this analysis, categorical variables are compared. Does proximity to Amazon's headquarters building affect the condition of Seatle rental homes? Use the Seatle Rental Data.
In this analysis, categorical variables are compared.
Does proximity to Amazon's headquarters building affect the condition of Seatle rental homes?
Use the Seatle Rental Data. Test whether (or not) there is a relationship between dwellings near the headquarters building and the age of dwellings (new/remodeled).
What to do:
- Use the chi-square test.
- Provide your work for problems 1 to 7 below.
- Use Excel (please show me how you use it) or work by hand is fine too.
- Use the dataset below. You will need to find two categorical variables.
- Use the two categories in a pivot table to determine the observed counts.
- Compute the expected counts, the chi-square test statistic, the df, and the p-value.
- Make a suitable chart to compare variables.
Dataset:
New Properties | Old Properties | Total | |
Close to the Building | 14 | 24 | 38 |
Far from the Building | 6 | 26 | 32 |
Total | 20 | 50 | 70 |
Problems:
- Give the observed counts and a side-by-side bar chart or stacked bar chart.
- Provide the null and alternative hypotheses.
- Provide a table of the expected counts.
- Is the sample representative of the population of interest?
- Is each expected count at least 5?
- Find the test statistic, df, and p-value.
- Describe the results in your conclusion. Your alpha = 0.10.
- (For 7.) Make a statement regarding the alternative hypothesis.
- (For 7.) Specify whether (or not) to reject a null.
- (For 7.) Context should be included.
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