Data concepts, sampling, and bias
Classify data as categorical or quantitative, identify sampling methods, and recognize sources of bias in a study. Unlimited questions, five difficulty levels, and a full worked solution every time — free.
Try one
A researcher collects the outdoor temperature each day, in degrees Celsius. What type of data is this?
- continuous quantitative
- categorical
- quantitative (unspecified)
- discrete quantitative
Answer: continuous quantitative
See one solved, step by step
Every student's name is written on a slip of paper, the slips are mixed in a bin, and 30 names are drawn without looking. What sampling method is being used?
- systematic sample
- convenience sample
- stratified sample
- simple random sample
📘 Worked solution
1This is a simple random sample.Every individual has an equal chance of being chosen, with no grouping involved.
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