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Arithmetic mean

ANOVA sample problem

Subject: 
Statistics
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Tags: 
Statistics
Data analysis
Means
Probability theory
Variance
Normal distribution
Arithmetic mean
health
Anova

Age-Problem A researcher wishes to see whether there is a difference in the average age of nurses, doctors, and X-ray technicians at a local hospital. Employees are randomly selected. At 95% confidence level, can the researcher conclude that there is a difference in the average ages of each group? Nurses Doctors X-Ray Techs 23 60 33 25 36 28 26 29 35 35 56 29 42 32 23 22 54 41 58 28.833333333333332 46.428571428571431 31.5 Mean 62.966666666666605 181.28571428571436 39.1 Variance 36.157894736842103 Grand Mean GPA-Problem The GPAs of students participating in college sports programs are to be compared. At ?=0.05, can one conclude that there is a difference in the mean GPA of the three groups? Football Baseball Hockey 3.2 3.8 2.6 2.6 3.1 1.9 2.4 2.6 1.7
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