'Sample sd' diaporamas de présentation

Week 5 ETEC 668 Quantitative Research in Educational Technology

914 views • 76 slides

670 views • 53 slides

Intro to Statistics for the Behavioral Sciences PSYC 1900

Intro to Statistics for the Behavioral Sciences PSYC 1900. Lecture 10: Hypothesis Tests for Two Means: Related & Independent Samples. Clarification of Estimating Standard Errors.

394 views • 22 slides

Chapter 4 Central tendency and variation

Chapter 4 Central tendency and variation. Chong Ho Yu. Central tendency. Mean: Average (sum of all numbers/sample size) Median: middle (50% at the boxplot) Mode: Most recurring frequency (What is the most popular car among APU students? What is the most common GPA?).

211 views • 14 slides

266 views • 12 slides

Chapter 4 Central tendency and variation

Chapter 4 Central tendency and variation. Chong Ho Yu. Central tendency. Mean: Average (sum of all numbers/sample size) Median: middle (50% at the boxplot) Mode: Most recurring frequency (What is the most popular car among APU students? What is the most common GPA?).

118 views • 11 slides

Quiz 7

Quiz 7. Hypothesis testing of single samples z -test and t -test. 1. Which of the following pair of statistical hypotheses is NOT valid?. a) H 0 : ? = 82 kg H 1 : ? ? 82 kg b) H 0 : ? ? 82 kg H 1 : ? < 82 kg c) H 0 : ? < 82 kg H 1 : ? > 82 kg d) H 0 : ? ? 82 kg H 1 : ? > 82 kg.

218 views • 9 slides