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🤖 Data & AI

Statistics for data work

p-values, confidence intervals, correlation and the sampling mistakes that sink an analysis.

8questions

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Question 1 of 8

A p-value of 0.03 means:

Question 2 of 8

A 95% confidence interval means that:

Question 3 of 8

Correlation does not imply causation mainly because of:

Question 4 of 8

The Central Limit Theorem says the sampling distribution of the mean:

Question 5 of 8

Survivorship bias is:

Question 6 of 8

Simpson's paradox is when:

Question 7 of 8

The median is preferred over the mean when data is:

Question 8 of 8

Running 20 independent tests at p < 0.05 with no true effects gives, on average:

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