State the degrees of freedom error in each of the following tests.
(a) A consultant measures job satisfaction in a sample of 14
supervisors, 14 managers, and 14 executives at a local firm.
(b) A researcher tests how nervous public speakers get in front of
a small, medium, or large audience. Eight participants are randomly
assigned to each group.
(c) A high school counselor has 9 students in each of five classes
rate how much they like their teacher.
Ans:
a)
N=14+14+14=42
number of groups,k=3
degrees of freedom (error)=42-3=39
b)
N=3*8=24
number of groups,k=3
degrees of freedom (error)=24-3=21
c)
N=5*9=45
number of groups,k=5
degrees of freedom (error)=45-5=40
State the degrees of freedom error in each of the following tests. (a) A consultant measures...
State the degrees of freedom error in each of the following tests. (a) A consultant measures job satisfaction in a sample of 16 supervisors, 16 managers, and 16 executives at a local firm. (b) A researcher tests how nervous public speakers get in front of a small, medium, or large audience. Eleven participants are randomly assigned to each group. (c) A high school counselor has 12 students in each of four classes rate how much they like their teacher.
For each example, state whether the one-sample, the two-independent-sample, or the related samples t-test is most appropriate. If it is a related samples t-test, indicate whether the test is a repeated measures design or a matched-pairs design. 1) A researcher matches right-handed and left-handed siblings to test whether right-handed siblings express greater emotional intelligence than left-handed siblings. A. one-sample t-test B. two-independent sample t-test C. related samples t-test using the repeated measures design D. related samples t-test using the matched-pairs...