Notes in Foundational Science

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Published	08/28/2024	What is "normal" in statistics?{{c1:: The mean plus and minus two standard deviations     AKA: AVG +/- 2 SDs}}
Published	08/28/2024	What do you used to compare mean differences?{{c1:: Independent sample t-test or paired sample t-test}}
Published	08/28/2024	When do you use an independent sample t-test?{{c1:: They are used to compare the means of two independent populations. Example: Is there a mean differ…
Published	08/28/2024	When do you use chi square test?{{c1:: To test relationships beteen categorical variables. Example: Is there a relationship between education level an…
Published	08/28/2024	When do you use ANOVA? {{c1:: It is used to compare the means between three or more groups. Example: Compare SAT scores between freshman, sophomo…
Published	08/28/2024	When do you use the Kaplan-Meier method?{{c1:: It is used to analyze time-to-event data. It's often used to measure mortality (patients that are alive…
Published	08/28/2024	Differences between type 1 and Type 2 error?{{c1:: Type 1: False positive. Erroneously rejecting null hypothesis. Denoted by alpha (which is the proba…
Published	08/28/2024	How do you improve accuracy? {{c1:: Increasing sample size}}
Published	08/28/2024	How do you narrow confidence interval?{{c1:: Increasing sample size or lower confidence level}}
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