Use the Following Display for the Next Questions

question 11

Short Answer

Use the following display for the next questions. The display is based on
sample annual data relating to the ozone layer monitoring at Halley Station in
Antarctica. The dependent variable is the year. The independent variables are as
follows: the level of ozone in Dobson units (DU), the global temperature (Temp, in
°C ), and the United States chlorofluorocarbon (CFC) gases production (in
thousands of metric tons).

-If only one independent variable is used to predict the year, which single variable is best?

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Definitions:

Chi-square Tests

Statistical tests that use the chi-square statistic to test hypotheses about the distribution of categorical variables.

Lower-tailed

Refers to a type of hypothesis test or confidence interval that focuses on determining whether the value of interest is significantly less than a specified value.

Perfect Fit

A situation where a model, equation, or line precisely describes or predicts the observed data without any errors.

Chi-square Test

A statistical test used to determine if there is a significant difference between observed and expected frequencies in one or more categories.