PSYC 2130 Lecture Notes - Lecture 9: Statistical Inference, Mental Rotation, Intelligence Quotient

• School: York University
• Department: Psychology
• Course: PSYC 2130
• Professor: Krista Phillips

Document Summary

If a company hires a psychologist for a question such as should flavour be congruent to scent or obtain/assess flavour ratings of different potato chips or other food products. Then you must be very careful of your sampling procedures: for example: nestl "s marketing strategy will be dependent on your finding. Sometimes sampling procedures are really important, other times, less important: the most effective way to obtain a representative sample is via random sampling. A procedures whereby each person has equal chance of being selected as part of the sample: random sampling is likely to be representative in large samples. Must be mindful of this when collecting data: random sampling will ensure the numbers are close, but not the exact same if the sample is too small. So what would the numbers look like if that variation coming from the luck-of-the-draw factor eliminated. 4 common factors that can produce a significant difference: chance, operation of the iv, error, fraud.