401077 - Introduction to Biostatistics - Autumn - Statistics Assignment Help

Assignment Task :

Question 1  
Consider the sample from the Framingham Study assigned to you for your assignment. 
a) Explain why heart rate (heartrte) is a quantitative variable.  
It is possible to do mathematics on the responses: the average of which is a meaningful answer on the measurement scale.  
b) Explain why your student number (yourID) is not a variable. 
The variable is measured on a numeric scale. It is not possible to do any mathematical manipulation: it doesn’t make sense to take the average of 19819916. 
 

Question 2 
a) Using the sample from the Framingham Study assigned to you and R Commander, graph the distribution of serum total cholesterol (totchol). Provide an appropriate title and descriptive axis labels. 

b) Using appropriate statistics from R Commander, write one or two sentences describing the distribution of serum total cholesterol (totchol). 
 

Question 3  
Using the sample from the Framingham Study assigned to you and R Commander, graph the frequency distribution of ‘Attained education’ (educ_f). Provide an appropriate title and descriptive axis labels. Write a sentence or two summarising the main characteristics of this distribution as shown by the graph. 
 

Question 4 
Using the sample from the Framingham Study assigned to you and R Commander, graph respondents’ ‘serum total cholesterol’ (totchol) against ‘Attained education’ (educ_f). ). Provide an appropriate title and descriptive axis labels. Using the graph and associated statistics, write a sentence or two describing the relationship between these two variables. 
 

Question 5  
a) Using the sample from the Framingham Study assigned to you and R Commander, tabulate the relationship between gender (sex) and current cigarette smoking (cursmok). Include frequency counts and either row or column percentages. 
b) Using the results in part a) write a sentence or two describing the relationship between gender and current cigarette smoking.  
c) If you were to select one person at random from this data set, what is the probability they would be a male and a current cigarette smoker?  
d) If you were to choose one female at random from this data set, what is the probability they would be a current cigarette smoker? 
 

Question 6 
a) Using the sample from the Framingham Study assigned to you, what proportion of people in your data set are coded as currently using blood pressure medications (bpmeds=Current use)?  
 

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