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November 01, 2025, 02:50:23 pm
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Author Topic: Is This Generalisation Wrong?  (Read 1450 times)  Share 

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Sarah P

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Is This Generalisation Wrong?
« on: October 21, 2015, 04:17:23 pm »
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Hey, so I've been going through some practice exams and in one particular section c scenario I believe that the generalisation is wrong...

A brief overview of the question is that a teacher who wanted to test the effect listening to music has on exam performance calculated a p value of p >0.05. She also used a random sampling technique.

The conclusion in the answers says that the hypothesis can't be supported due to the results not being statistically significant, however it says that a generalisation can be made as every member of the population has an equal chance of being chosen for the investigation.

That can't be right, right? I mean, i do know that a generalisation can be made if the sample is representative of the population, but isn't it true that it cannot be made at all if the results are not statistically significant? It's really thrown me off guard...
 
Thanks  :)
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anat0my

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Re: Is This Generalisation Wrong?
« Reply #1 on: October 22, 2015, 03:01:47 pm »
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Also interested in knowing this.
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thechicken103

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Re: Is This Generalisation Wrong?
« Reply #2 on: October 22, 2015, 08:06:44 pm »
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I'm pretty sure a generalisation cannot be made as the results are not statistically significant, in this case there is a greater than 5% chance that the results of the DV are not due to the IV.
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Sarah P

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Re: Is This Generalisation Wrong?
« Reply #3 on: October 22, 2015, 08:35:21 pm »
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Quote from: thechicken103 on October 22, 2015, 08:06:44 pm
I'm pretty sure a generalisation cannot be made as the results are not statistically significant, in this case there is a greater than 5% chance that the results of the DV are not due to the IV.

Thanks, its really reassuring to hear that coming from another person! The prac. exam was made by LisaChem (if that helps), so I don't know whether they have a reputation for dodgy answers regarding psychology or not  :P
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2016 ATAR - 99.10

2015- Psychology [45]
2016- English [44]
          Media [50]
          Legal Studies [47 ]
          Physical Education [41]
          Mathematical Methods (CAS) [29]

And that was all she wrote...for now...

thechicken103

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Re: Is This Generalisation Wrong?
« Reply #4 on: October 24, 2015, 05:50:09 pm »
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In my experience, the answers for Lisachem are okay, except when it comes to research scenarios. The answers to the research scenarios that I've done from Lisachem have been a bit dodgy  :P When in doubt though, it's probably best to ask your teacher
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Unblemished

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Re: Is This Generalisation Wrong?
« Reply #5 on: October 24, 2015, 07:14:51 pm »
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For the results to be generalised:

P - value needs to be statistically significant
Sample is representative of the population
EVS should not impact the results greatly

So, you are indeed correct.
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