ata Analysis

A. Graphs: use graphical displays to examine the data.

1. One graph that gives a sense of the potential relationship between the two variables that form your chosen health question. Include the graph and discuss why you selected it as opposed to others.

What is your health (research) question?

To what extent does gender influence the length of hospital stays for MI patients?

What are the corresponding null and alternative hypotheses?

Women los is longer than men due to MI. Men los is longer than women due to MI.

List the descriptive statistics you will compute, using which variable(s), to help answer your health question.

Histogram, dotplot, and 2 sample t hypothesis test

What is the name of the statistical test you will use to test your hypothesis and answer your health question?

Two sample t-test

What is the formula for your chosen statistical test?

H0: ?1 = ?2 H1: ?1 ? ?2

Why is the statistical test you chose appropriate to answer your health question?

The statistical test I chose is appropriate because it allows two different groups to be compared and tested. It tells you if there's a difference between two population groups.

Which graph(s) (histogram, stem and leaf, boxplot, bar graph, scatterplot) will you use to visualize the answer to your health question?

Be specific and include which variables will be used and if the graph will be created for different subgroups of subjects.

- Histogram

- Dot plot

- Two sample t-test

0 / 1 pts Which arrangment below correctly orders the procedures from most powerful to least? Wilcoxon Sign Rank test, Chi-Squared test for independence, One Proportion Z-test Kruskal-Wallis, Friedman Fr-test. ANOVA CRD Wilcoxon Rank Sum, Wilcoxon Sign Rank test, Independent t-test The independent Sample Z-test, The independent sample t-test, The Wilcoxon Rank SumQuestion 23 1 pts Which arrangment below correctly orders the procedures from most powerful to least? O Kruskal-Wallis, Friedman Fr-test, ANOVA CRD Wilcoxon Sign Rank test, Chi-Squared test for independence, One Proportion Z-test One Sample Z-test, One Sample t-test, The Sign Test Wilcoxon Rank Sum, Wilcoxon Sign Rank test, Independent t-testChoose the correct statement(s) about the Runge-Kutta method. (can choose more than one answer) * Runge-Kutta method is less accurate than Euler method. Runge-Kutta is a common method for solving differential equations numerically. Runge-Kutta method used four functions k1, k2 , k3 and k4 in its evaluation. It is used more accurately than the Euler method.