Healthcare Statistics

HEALTHCARE STATISTICS 4

HealthcareStatistics

Part1

TwoUnrelated Groups

Aresearcher investigating the number of patients admitted in ABCHospital that had cancer and another disease carried out a surveyinvolving 480 patients. However, this survey was carried out in onlytwo wards. The first group involved 240 patients in the X-ray ward,while the second group involved 240 patients in the emergency ward.The mean of the first group of patients was 688.9987 while thestandard deviation of the group was 65.54909. On the other hand, themean of the second group of patients was 611.1559, while the standarddeviation of the group was 61.85425. Having this information, theresearcher desired to find out whether the variance of the firstgroup of patients was different from the variance of the secondgroup. The hypothesis to be tested was whether the variances of thetwo different groups were different.

TwoRelated Groups

Agroup of 120 students in radiology in the university were involved ina survey that tried to identify students with blood group A and thosewith blood group O. The group of 120 students was divided into twowithout using any creterion. The mean, variance and standarddeviation of students that had these two blood groups were measuredand recorded, then the researcher used this information in trying tofind out whether the means of the students having the two bloosdgroups were statistically different. Therefore, the hypothesis to betested is whether the two means are statistically different.

Part2

F value can be calculated by finding the ratio between two variances.Therefore, in calculating the F value, the variance for group 1scores and variance for group 2 scores will be calculated and thenthe ratio of the two variances calculated.

Group 1 Scores

Group 2 Scores

10

18

11

17

12

16

15

20

16

19

17

19

20

18

15

16

16

17

18

20

variance

10

variance

2.222222

F-value

4.5

References

Gosling,J. (1995).&nbspIntroductorystatistics.Glebe, N.S.W: Pascal Press.

Rumsey,D. J. (2007).&nbspIntermediatestatistics for dummies.Hoboken, NJ: Wiley Pub.

Salkind,N. J. (2013).&nbspStatisticsfor people who (think they) hate statistics.