health informatics

 

Exercise 1

A Saudi hospital investigated the possible ways of defining Hypertension in a local population. 
The collected data are the following:

Females n1= 739                  

Males n2= 1257   

Sample proportion = 16 females

Sample proportion = 22 males

 

a)   What is the proportion of females with hypertension?

b)   What is the proportion of males with hypertension?

c)   What is the proportion of patients suffering from hypertension?

 

 

Exercise 2

 

A group of students in a biostatistics class were asked to rate how fearful they were of exams, using a scale from 0 (absolutely no fear) to 10 (extreme fear).  Here are the data:

Exam Phobia level		Frequency
	5	1
	7	2
	10	1
	Total	4

 

For these 4 scores, compute the mean, median, mode, range, sample variance, and sample standard deviation. 

	Y	(Y-M)	(Y-M)2
	5	-2.25	5.0625
	7	-0.25	.0625
	7	-0.25	.0625
	10	2.75	7.5625

 

 

 

 

 

 

 

 

Exercise 3:

Create a PowerPoint presentation with 3-5 slides explaining a biostatistics concept of your choice (from the chapters 1 to 10)