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Exam (elaborations)

BUSI 3443 : L11_NormalDistribution | 2026 Update

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BUSI 3443 : L11_NormalDistribution | 2026 Update

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Normal Distribution
MIS 3020
Wenxi Pu




umanitoba.ca/asper

, Recap and Notes
• Estimation & Bootstrap
• Percentiles & Confidence intervals
• Center and Spread
• David Mullins from SpiritRx
• Slightly Updated Teaching Schedule
• Demos & Exercise 5
• Assignment 5 due this Friday at 9 PM.



umanitoba.ca/asper

, Objective
• Normal Distribution
• Central Limit Theorem




umanitoba.ca/asper

, Review: Standard Units

● How many SDs above average?
● z = (value - average)/SD
○ Negative z: value below average
○ Positive z: value above average
○ z = 0: value equal to average
● When values are in standard units: average = 0, SD = 1
● Gives us a way to compare/understand data no matter what the
original units



umanitoba.ca/asper

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