Inferential statisticsINFERENTIAL STATISTICS QUESTIONS AND ANSWERS
Inferential statistics - answer-Statistical tests whose goals is to determine the probability of an occurrence
-Analyze data to est. the likelihood that different in the groups are the result of chance as opposed to the manipula...
Inferential statistics - answer-Statistical tests whose goals is to determine the
probability of an occurrence
-Analyze data to est. the likelihood that different in the groups are the result
of chance as opposed to the manipulation of variables.
Probability - answer-refers to the likelihood that the difference between
groups are the result of chance. Acceptable levels of chance must be
specified in order to keep w/in the framework of inferential stats
Standard error( sampling error) - answer-The discrepancy between the char.
of the sample and the population. The discrepancies that occur when a small
group(sample) is selected to represent the char. of a larger
group(population)
Null Hypothesis - answer-A statistical statement that predicts no difference
between the groups of events or observations under study.
Inferential stats are used in an effort to reject the null, showing that a
difference does exist.
Statistical significance - answer--Involves Sub. a stats value for an observed
relationship and comparing the stat. value to a distribution of other stat.
values to determine how likely the value of interest could have occurred by
chance.
Level of significance ( Alpha Level) - answer-Whether null should be rejected
depends on the level of error that can be tolerated. --- Determined to ID the
prob. that the differnce between groups have occurred by chance rather
than in response to the manipulation of the variables.
Level of significance ( Alpha Level) - answer-P or alpha is usually .05 but can
be .01 or .001
-How many times out of a 100 or 1000 the null might incorrectly rejected.
The lower the A level the greater the confidence that the diff. between
groups did not occur by chance.
type 1 error - answer-rejecting the null hypothesis when it is true( no
difference between groups)
[Type here]
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TOPDOCTOR. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R145,90. You're not tied to anything after your purchase.
