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- Suppose you have access to a database with the variables listed below. Choose two variables you are interested in exploring that may be related (a predictor and outcome). Which variable is your y (outcome) and which is your x (predictor)? *Hint: which one may predict the other? Example: hot weather may predict sunburns.The r code for side by side boxplot of vitamind v newage and vitamin d v country. Scatterplot code for relationship between vitamin d level and age.Use a method of transformation of variables for the following items.
- If there is an interaction between the variables of “activity level” and “time of day,” this means that activity level does not have the same effect at different times of day. Group of answer choices True FalseMap the nodesWhat is meant by the statement that two variables are related? Choose the correct answer. OTwo variables are related when the value of one can be derived mathematically from the value of the other. Two variables are related when a scatterplot can be made of points using the two variables as values. OTwo variables are related when a change in one can be shown to cause a change in the other. OTwo variables are related when a discernible pattern exists between them.
- The data set Pain contains hypothetical data for a clinical trial of a drug therapy to control pain. The clinical trial investigates whether adverse responses increase with larger drug doses. Subjects receive either a placebo or one of four drug doses (1, 2, 3, or 4 units). An adverse response is recorded as Adverse = 'Yes'; otherwise, it is recorded as Adverse = 'No'. The number of subjects for each drug dose and response combination is contained in the variable Count. (a) Construct a contingency table that corresponds to the data set created above. What type of variable is Dose? (B) Compute the sample proportions of adverse responses at each dose level. Do you observe any trend in the proportion of adverse responses with respect to dose level? (C) Conduct a Cochran-Armitage trend test at the 5% significance level to address the interests of the trial.All of the data is in the two picturesMake a table of the most useful variables. Select an appropriate graph type and make a graph using two variables from this data set. Explain why you selected the variables you did and which is the dependent and which is the independent variable.
- A company produces handmade shawls and afghans. They spin the yarn, dye it, and then weave it. A shawl requires 1 hour of spinning, 1 hour of dyeing, and 1 hour of weaving. An afghan requires 1 hour of spinning, 2 hours of dyeing, and 4 hours of weaving. There are at most 8 hours available each day for spinning, 10 hours for dyeing, and 16 hours for weaving. Summarize the data in a table. Use the table to write a system of inequalities. Then graph the feasible region. Complete the table. Hours Hours Number Spinning Dyeing Shawls x Afghans y Maximum Number of Hours Available 8 10 Hours Weaving 16A company produces handmade shawls and afghans. They spin the yarn, dye it, and then weave it. A shawl requires 1 hour of spinning, 1 hour of dyeing, and 1 hour of weaving. An afghan requires 1 hour of spinning, 4 hours of dyeing, and 2 hours of weaving. There are at most 6 hours available each day for spinning, 14 hours for dyeing, and 8 hours for weaving. Summarize the data in a table. Use the table to write a system of inequalities. Then graph the feasible region. Complete the table. Hours Hours Hours Number Spinning Dyeing Weaving Shawls Afghans Maximum Number y 14 8 of Hours Available
