Melissa wants to investigate peoples different reaction times when sing their left or right hand. She selects a number of students from her class to use as a sample for her investigation.
a) Why is this a bad way of taking a sample?
b) Describe a better way of taking a sample that Melissa could use.
a) Why is this a bad way of taking a sample?
b) Describe a better way of taking a sample that Melissa could use.
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a) everyone is the same age, and possibly intelligence set.
b) by getting a stratified sample of her whole school, including teachers.
b) by getting a stratified sample of her whole school, including teachers.
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a)she doesnt randomly select her participants so if the nerds had a faster reaction times she could have picked all the nerds to have better results
b)She could take an equal amount of people randomly with equal amounts of girls and boys
ex.
5 boys
5 girls
b)She could take an equal amount of people randomly with equal amounts of girls and boys
ex.
5 boys
5 girls