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Holt Mcdougal Larson Pre-algebra: Student Edition 2012

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Would someone familiar with SPSS be able to help me with sub-questions b and c please?

Question 1
In a study of the in vivo effects of cytokines on in vitro clonogenicity assays, a number of rhesus macaques
(of the same age and gender) were randomly assigned to one of three treatment groups. Bone marrow
samples were taken from the monkeys after 10 days, and the number of CD34+ cell colonies determined by
flow cytometry.
The results of the trial are contained in the file Marrow. say, where two variables are listed:
●
mmm
b)
c)
cocktail A factor, with three levels, giving the group to which the monkey was assigned:
O
1 Control group, administered a placebo;
O
2 TCC group, administered the traditional cytokine cocktail;
O
3 ACD3S group, administered a conditioned media with anti-CD3.
count Number of colonies of CD34+ cells detected in vitro.
a) Produce a box plot to show a comparison of the number of colonies detected between each group.
Comment on the appearance of the plot.
Perform an analysis of variance calculation to test the null hypothesis that the mean number of
colonies is the same in all three groups of monkeys, and comment on your results.
Perform both (i) a pairwise comparison with a Bonferonni correction and (ii) a Tukey honest
significant differences analysis to determine where the significant differences lie, and discuss the
results.

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