# Research Methods Week Two

### Description

Variance and Averages
Flashcards by Daniel Walford, updated more than 1 year ago
 Created by Daniel Walford over 4 years ago
0
0

## Resource summary

 Question Answer Σ The sum of all numbers (Upper-case Sigma) What graph, and symmetry, can be used to test if the mean is appropriate? A histogram What is the mode? The most frequent number What averages are measures of Central Tendency? The Mean, Median, and Mode are all measures of central tendency What are measures of variability? Measures of variability include: The Range, IQ Range, Variance, Standard Deviation What is the IQ Range? The Range of the middle 50% scores What is the Variance? The average of each score's squared deviation from the mean σ Variance (Lower-case Sigma) When do you divide by N in variance? When you have a PoPuLaTiOn When do you divide by N-1 in variance? When you want to generalise a sample. REMEMBER, N(Population) -1 is the sample, because the sample is less than the Population!

### Similar

Research Methods
DOCUMENTS
Inclusive Education: Efficacy Research
Groups, Formal Organizations and Bureacracy
Theoretical Issues Influencing Research Methods
Ethics In Psychology Research
Obedience Core Study - Bickman
Studying Deviance
Strength and Limitations of research methods
Year 11 Psychology - Intro to Psychology and Research Methods
Psychology A1