Class Notes (835,377)
Canada (509,147)
York University (35,229)
Psychology (4,108)
PSYC 2021 (63)
Lecture

Lecture #8.docx

1 Page
79 Views
Unlock Document

Department
Psychology
Course
PSYC 2021
Professor
Agnieszka Kopinska
Semester
Fall

Description
Lecture #8 Quick Review:  Power of statistical test: probability of rejecting false null hypothesis. o ‘Reject’ or ‘Fail to reject’ only applies to 0 t-Statistic  Estimated sample error (sM): o s M s/(sqrt. of n) o Use it when you don’t know σ of population  observed(M-μ)/ s M  If sample size is huge, ‘t’ distance becomes the same as ‘z’ distance.  We estimate population standard deviation with sample standard deviation.  t-distribution is flatter than normal distribution (has heavier tails)  More difficult to reject the null in the tails (critical values are more extreme)  In hypothesis testing, we must know the degrees of freedom to indentify the critical value  critical value score defined by alpha.  If the p value is small, we r
More Less

Related notes for PSYC 2021

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit