Fichas
Chapter 5 flashcards
Fichas del conjunto (28)
- 1Nominal Scale* symbols to classify into groups
*these only serve to mark, not give value
ie: 1=female, 2=male
(other ie: personality type, country, college major) - 2Ordinal Scale*rank order of objects/individuals
(order in a race, letter grade ABCF) - 3Interval Scale*Rank order
*Equal Intervals/distance between #'s
ie: celsius temp, IQ score - 4Ratio Scale*Quantitative
*Rank ordering
*Equal Intervals
*Absolute Zero
ie: weight, height, annual income - 5Reliability*Consistency or Stability
- 64 Types of Reliability*Test-retest
*Equivalent-Forms
*Internal Consistency
*Interrater - 7Test-retest ReliabilityAdminister test, wait then administer again
- 8Equivalent-forms ReliabilityConsistency on 2 equivalent tests
(ACT, SAT) - 9Internal Consistency ReliabilityMeasure a single construct.
*test gets longer = more reliable - 10Interrater Reliability2 or more scorers, judges, raters agree
- 11Coefficient alpha (Cronbach's Alpha)*commonly reported
*.70 or higher
*used when want a estimate of reliability - 12Interobserver agreement% of times different raters agree
- 13Validity*Accuracy
- 14Operationalization*Way a construct is represented and measured
- 15Sample*elements selected from population
- 16Population*full set of elements from which you're sampling
- 17EPSEM*Equal Probability of Selection Method
*Any method where everyone has an equal chance of being selected for sample - 18Statisticnumber data of sample
- 19Simple Random Sample*names in a hat
*is an EPSEM - 20Stratified Random Sampling*Divide into groups or strata
*then random sample from ea group
*ie of groups: gender, ethnicity, height, age - 212 types of Stratified Sampling1. Proportional Stratified: #'s selected equal to size of pop (EPSEM)
2. disproportional: not equal to size - 22Cluster Random Sampling*Randomly select clusters
*ie: neighborhoods, families
2-types: 1 stage, 2 stage - 23Systematic Sampling3 Steps:
*determine interval (k)
*randomly select # between 1-k, include that person
*include ea. Kth element in sample - 24Periodicity*Problem occurs in systematic sampling if is a cyclical pattern
- 25Non Random Sampling Tech.*Convenience Sampling (whats available)
*Quota Sampling (set # then looks)
*Purposive Sampling (select w/purpose)
*Snowball Sampling(ask other to find) - 26Random Selection*get sample that represents pop.
- 27Random Assignment*Produce treatment and control groups
- 28Mixed Samplingmixing qualitative and quantitative
*develop more complex methods tailored to research
Información
- Descripción
- Fichas sobre Chapter 5 flashcards, creado por Laeni S el 10/02/2018.
- Creado por
- Laeni S
- Visitas
- 0
- Valoración