Compare variances by F-test▼			alpha=0.05	
				
sample 1		sample 2		
10.23		12.19		
10.3		10.15		
11.55		11.2		
12.1		12.23		
11.11		10.58		
12.5		12.65		
13.21		13.01		
13.65		13.2		
12				
10.98				
				
				
				
				
##### Sheet/List 2 #####
Equality test											
											
"At the beginning of your diploma thesis work, you had obtained replicate measurements ""old"". After five month you repeated the experiments and got ""new""."											
Test on confidence level alpha=0.05 if the new data are equal to the old ones.											
											
											
new	old										
5.09	5.10										
5.46	5.60										http://www.itl.nist.gov/div898/handbook/eda/section3/eda353.htm
4.17	4.60										
4.83	5.10										
4.50	5.00										
4.93	5.60										
4.13	4.60										
4.62	5.00										
5.03	5.40										
4.54	4.90										
5.00	5.10										
5.68	5.90										
5.02	5.50										
4.79	5.20										
	5.20										
	5.40										
	4.60										
	5.10										
	4.60										
											
		 =N									
		 =variance									
		 =mean									
##### Sheet/List 3 #####
"Decide, if the two following data sets belong to the same population."							
							
set1	set2		Grubbs				
16.38	16.84						
16.15	15.46						
19.1	14.41						
12.45	18.1						
19.28	16.99						
20.12	15.11						
18.85	15.1						
18.1							
19							
17.77							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
							
##### Sheet/List 4 #####
One-sample t-test			
A new analytical method for iron determination in blood was introduced. Replicates were obtained on a sample previously analyzed by a reference method.			
"Decide, if the new method is reliable."			
			
	new method	"reference 
method"	
	11.23		
	11.31		
	11.55		
	11.11		
	11.14		
	11.45		
	11.21		
	11.65		
	11.95		
	10.98		
			
		11.11	 =true value
##### Sheet/List 5 #####
"The normoglycaemia in healthy fasted subjects is considered to be 3.9-5.6 mmol / l. In diabetic patients, the fasting range of 4-6 mmol / l is considered to be the optimal fasting blood glucose level "		
"(which is the target of therapeutic intervention), the range of 6-7 mmol / l is judged satisfactory and above 7 mmol / l the unsatisfactory blood glucose level"		
"An effect of a drug on glycemia (glucoseemia) was tested on 16 subjects. Decide, if the drug has an effect."		
		
		
		
		
	mmol/l	mmol/l
	before	after
1	7.8	3.6
2	5.8	6.0
3	6.5	6.3
4	5.5	6.0
5	4.8	5.0
6	7.7	4.0
7	4.9	7.9
8	5.1	5.3
9	6.1	3.6
10	4.5	6.8
11	5.8	6.6
12	3.6	6.3
13	6.0	7.8
14	3.8	3.8
15	6.8	5.8
16	5.9	3.6
##### Sheet/List 6 #####
Three pharmacies recorded their sales during a week.					
"Test, if there is a significant difference."					
					
					
	pharmacy A	pharmacy B	pharmacy C		
	55	54	47		
	54	50	53		
	58	51	49		
	61	51	50		
	52	49	46		
					
T					grand mean
B					between groups
					MS
					d.o.f.
					
					
W					
					
					d.o.f.
					
					within groups
					MS