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Z-Scores
Percentile
Normal Distribution
Calculations
Misc.
100
What is the Formula for a Z-Score?
What is Z=(X-µ)/σ
100
What does it mean when Jeff is in the 70th percentile in his class.
This is saying that 70 percent of the class is below Jeff.
100
What is the Normal Distribution Abbreviation?
What is N(µ,σ)
100
Eleanor scores 680 on the SAT Mathematics test. The distribution of SAT scores is normal, with a mean of 500 and standard deviation of 100. Barney takes the ACT Mathematics test and scores 27. ACT scores are normal, with a mean of 18 and a standard deviation of 6. Find the standardized scores for both students. Assuming that both tests measure the same kind of ability, who did better on their test?
What is Eleanor did better with a percent of 96.41%. Barney had a lower score with a percent of 93.32%.
100
How does adding then multiplying effect shape, center, and spread?
What is Shape: Remains the same through both processes Center: Affected by both addition and multiplication Spread: Affected through only multiplication