BST 322 BST322 Week 1 Assignment (National University)

1.For each of the following (a through d), indicate which is a variable and which is a constant:
2.For each of the following research questions, identify the independent variable and the dependent variable within each case (a through e):
3.For each of the variables listed below, indicate which is discrete and which is continuous:
4.For each of the variables listed below, indicate whether the measure is nominal, ordinal, interval, or ratio:
5. Â Frequency table results for # of times a pt fell during a 12 month period:Â
6.Using information from the frequency distribution in Exercise 5, answer the following:
7.Would it be advantageous to group the data in Exercise 5 before constructing a frequency distribution? Â Why or why not?
9.The following set of numbers represent the scores of 30 psychiatric inpatients on a widely used measure of depression. Â What are the mean, median, and mode for these data?
10.The following 10 data values are systolic blood pressure readings. Â Compute the mean, range, standard deviation, and variance for these data using StatCrunch. Â Copy and Paste your work from StatCrunch into your Word document submission.
12. Using StatCrunch, construct a contingency table for these data, computing both row and column percentages for each of the four cells. Copy and Paste your StatCrunch table into your Word document submission.
13. Using StatCrunch, construct a scatterplot that shows the relationship between the two variables. Â Copy and Paste your work from StatCrunch into your Word document submission. Verbally describe the direction and magnitude of the relationship.
14.Â Correlation between Diastolic and Systolic is:
15. Using StatCrunch, construct a scatterplot that shows the relationship between the two variables (carbon dioxide concentrations and the measured change in Global temperature). Calculate the r value using StatCrunch. Â Copy and Paste your work from StatCrunch into your Word document submission. Verbally describe the direction and magnitude of the relationship you find. Â What does this tell you about Global warming?