
Explore the basics of hypothesis testing, including null and alternative hypotheses, the rejection region and alpha, and interpreting sample means under normal distribution.
Explore how the p-value, tail areas, and alpha level determine whether to reject the null hypothesis in a two-sided test.
Master hypothesis testing with a z test, using the z distribution, x-bar, confidence intervals, and known sigma against mu0=100; set alpha 0.01; conclude not to reject.
Examine two-sided hypothesis testing with an x-bar standard deviation of 0.8, identifying rejection regions on both sides, and compute p-values from z-values 2.5 and 2 to form a confidence interval.
Explain a two-sided hypothesis test and p-values using a t-distribution with 15 degrees of freedom, and illustrate a 95% confidence interval for the mean with x-bar and its standard error.
Apply chi-square hypothesis testing to assess whether standard deviation remains below 20 milliliters, using a milk beverage example, and interpret degrees of freedom and left-tail p-values.
Apply the f-test to compare two standard deviations in a hypothesis testing framework, using the f distribution, degrees of freedom, and rejection regions to decide if variances differ.
Discover how to find F critical values from tables by using numerator and denominator degrees of freedom and alpha, and learn reciprocal calculations for left-tail values using the F distribution.
Welcome to my course in Statistics!
After finishing this course you will master the next subjects:
Still to come: Power calculations by hand. Which comes in really handy. Power is the probability that you will find a significant result (before gathering your data).
Terminology will be as easy as possible. I'm a teacher and my maingoal is to make statistics easy :).
Exercises are included (they are in the videos, in the beginning you see the exercises, then you have to stop the video, make them, and then see the answers with explanation).
Please if you want to have specific questions ask them to me! I will be more motivated to make videos answering your questions than just randomly ;) Also if you already want some SPSS explanation… I want to make all my video’s and it doesn’t matter for me in which order ;)
Last but not least, Wish you guys good luck and fun while going through my course :)
See you inside :)