TTrF lab conclusions for ind & dep t-tests
October 13, 2009
Each laptop should share a conclusion statement by commenting. Additionally, I would like for you to look at the output from each problem and notice which test is more powerful. Why?
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October 13th, 2009 at 8:02 am
Dependent Samples
We can conclude that the speed reading class had a significant effect on the students and improved their reading. t(10) 3.612 p=.006
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October 13th, 2009 at 8:03 am
Independent Conclusion: There is a significant difference between the number of words that those who took the speed reading class and those who did not could read per minute; therefore we reject the null hypothesis. t(18)=-2.780. p=.10.
Paired Sample: There is a significant difference between the words per minute that the students were capable of reading before and after the speed reading class, which means we can reject the null hypothesis. t(9)=-3.786. p=.004.
It seems that the paired sample is a stronger test because the probability level is more certain.
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October 13th, 2009 at 8:04 am
Conclusion for Dependent:
After conducting a dependent test we concluded that the class improved speed reading. t(9)=-3.612, p=.006 Reject the null
Conclusion for Independent:
After conducting an independent test, we concluded that the class did not improve speed reading. t(9)=-2.675, p=.015 fail to reject the null
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October 14th, 2009 at 11:32 am
INDEPENDENT 1: There is no significant difference in psycho-motor coordination between the valium and placebo groups. t(27)= -2.3147, p>.01
INDEPENDENT 3: There is a significant difference in the rats’ activity levels between the amphetamines group and the placebo group. t(10)= 5.353, p<.001
DEPENDENT 2: There is no significant difference in performance between the group of rats given normal amounts of vitamin A and the group of rats deprived of vitamin A. t(8)= 1.3730, p=.207
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October 14th, 2009 at 11:42 am
There is no significant difference in psycho-motor coordination between the valium and placebo groups. t(27)= -2.315, p=.028.
There is no significant difference between the number of maze errors made by rats with the normal level Vit. A and the rats deprived of Vit. A. t(8)= -1.373, p=.207
There is a significant difference in the activity level between rats recieving stimulants and those receiving a placebo. t(10)= 5.35, p<.02
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October 14th, 2009 at 4:21 pm
we have some questions about the test tomorrow?
-open or closed? or both
-spss on it y/n
-definitions
are we going to review tomorrow or have computers?
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October 15th, 2009 at 7:39 am
Independent Conclusion:
There is significant evidence to suggest that the speed reading course had an effect on the speed words per minute in the two different groups. t(18)2.780, p=.004
Dependent Conclusion:
There is significant evidence to suggest that there is a difference between the before and after groups. The speed reading course does increase the words per minute, that were read by the speed readers. t(3.786), p=.01
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