Lecture week 10- CI Flashcards
In research what is there always
we use samples to give….
we use the sample means as an estimate….
what is the confidence interval
what does confidence interval look on a graph
can CI be calculated on any level
what is the most usual level for calculating CI
if the CI is 95% what does this mean
what is the equation for 95% CI
the higher the CI….
if the CI is 50, 90, 95% what statement is stated after
of containing the true population mean/parameter
what is the equation for the t-value
where do u find the t-value
what does the t-value depend on
how is SE calculated
how is df calculated
is the CI lower limit TO upper limit
What are the steps for calculating confidence level
what does a wide CI indicate
lack of certainty
what does a narrow CI Indicate
more precise
if the complete absence of any effect corresponds to a difference of 0 or a 1 ratio what does this mean
what does it mean if the 95% CI around the observed effect size includes the no-effect value (0 for differences, 1 for ratios)
what does it mean if the 95% CI around the observed effect size does not include the no-effect value (0 for differences, 1 for ratios)
what affects the CI
how does CI affect sample size
what does H0 mean
what does H1 mean
when does a type 1 error occur
when does a type 2 error occur
explain the truth table
what are p values and does a p<0.005 indicate significance
what is power
what is the equation for power
what increases power
when does power power calculations be carried out
as power increases what 2 things decrease
what is Statistical Power affected by
what does Statistical significance not always imply
