Flashcards
Research Methods Week Two
Cards in this deck (11)
- 1ΣThe sum of all numbers (Upper-case Sigma)
- 2What graph, and symmetry, can be used to test if the mean is appropriate?A histogram
- 3What is the mode?The most frequent number
- 4What averages are measures of Central Tendency?The Mean, Median, and Mode are all measures of central tendency
- 5What are measures of variability?Measures of variability include: The Range, IQ Range, Variance, Standard Deviation
- 6What is the IQ Range?The Range of the middle 50% scores
- 7What is the Variance?The average of each score's squared deviation from the mean
- 8σVariance (Lower-case Sigma)
- 9When do you divide by N in variance?When you have a PoPuLaTiOn
- 10When 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!
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