Statistical Methods II PSYC Assignment

Assignment Task

Questions

1. An experiment was performed to assess whether exposure to various dust types (sterile vs pig excrement vs moose excrement) was related to the number of asthma attacks suffered by children in the 1-year period following exposure. The researcher measured the number of attacks suffered by 18 children during the year following repeated exposure to (one type of) dust. Perform the analysis with post hoc LSD t-tests if needed, table the results and write a short report. Note ∑ ∑ X!" # = 2552.

2. This year, departing graduate students in several faculties were asked to report the number of years they had spent to complete their PhD thesis requirements. Answer all questions from (a) to (e).

a) Complete the ANOVA table below. Show how you completed the calculations of (i) to.

b) How many faculties were compared?

c) How many students per faculty participated, assuming equal n's?

d) Is there is a difference among the faculties on the amount of time spent on their theses?

e) What is the effect size for the main effect of faculty?

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