PSY201H5 Lecture : Lecture 2
Document Summary
Designing an experiment: single group design the group is usually a population od individuals interested in an attribute, characteristic, or behaviour of members of groups. Need to define how the attribute will be measured. A population of measures is the set of measurements on every member of the group if the measure can be repeated by a #, then we need to know the precision of the measure. A sample is a subset of measures from the population of measures. Ask how are the measures in a sample distributed, so construct a frequency the sample should be as random as possible histogram. Measurement precision suppose we measure heart rate to the nearest 10th of a beat /second. Our measures are carried out to 2 decimal points. Measurement precision = 0 when measuring to nearest beat /sec. Precision of -2 when 1st two digits to the left not being used (tv price dollar increments)
