How much do fans love Justin Timberlake? (Part 2)
TEACHER NOTE: Please use a new class code for this part of the activity.
Class code:
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Let's do the activity!
Justin Timberlake’s concert promoter wants to find out how much fans in the V.I.P. section enjoy the concert. He will estimate the average enjoyment level (1 to 100) for all 50 fans by selecting a sample of 10 fans. Which sampling method will give him the best estimate?
Method #1: Simple Random Sample
Select a simple random sample of 10 fans.
Average enjoyment:
?
Method #2: Cluster Sample
Each column is a cluster. Randomly select two columns.
Interview all fans in the selected clusters.
Average enjoyment:
?
Method #3: Systematic Sample (every 8th)
Randomly choose a fan as a starting point.
Move down rows to interview every 8th fan.
After last row, wrap back around to the first row.
Average enjoyment:
?
If we did a census...
True mean enjoyment:
?
Teacher Panel
Admin code:
{none}
Edit which plot:
SRS
Cluster
Systematic
Collect the selected sample type this many times silently (max 2000) and plot the results:
Add up to 2000 values separated by spaces or commas:
Delete observation:
(Mouse over data to see exact values.)
Quick Add
To the
SRS
Cluster
Systematic
plot, quickly add
samples (max 2000).
Adjust color, rounding, and percent/proportion preferences
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