Asked by: Majid Beuttenmuller
asked in category: General Last Updated: 11th March, 2020

What is the difference between blocking and stratifying?

The difference (again, the easy way to think about it) is that blocking refers to the variables that the experimenter controls, while stratification refers to variables that the experimenter does not control, that the subjects bring with them to the experiment.

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In this way, what's the difference between Block and stratified sampling?

Blocks and strata are different. Blocking refers to classifying experimental units into blocks whereas stratification refers to classifying individuals of a population into strata. The samples from the strata in a stratified random sample can be the blocks in an experiment.

Furthermore, what is randomized block design with examples? Randomized Block Design. With a randomized block design, the experimenter divides subjects into subgroups called blocks, such that the variability within blocks is less than the variability between blocks. This design ensures that each treatment condition has an equal proportion of men and women.

Beside this, what is a stratifying variable?

Stratification Variable -- variable or variables by which a study population is divided up into strata (or groups)in order to select a stratified sample.

How does block randomization work?

Block randomization works by randomizing participants within blocks such that an equal number are assigned to each treatment. Note that repeat blocks may occur when the total sample size is greater than the block size times the number of possible orderings.

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