Notes: Percentages and Z-Scores

Presentation

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Mathematics

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10th - 12th Grade

•

Practice Problem

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Medium

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CCSS

HSS.ID.A.4

Standards-aligned

Annette Tutton

Used 4+ times

FREE Resource

4 Slides • 5 Questions

Notes: Percentages and Z-scores

We will explore how to find Percentages in a normal distrubution and how to find a z-score (where a number falls on a bell curve)

A Normal Distribution will contain 100% of all data collected with in the bell curve.

Each section of the distrubution will containg basic percentages for every type of data.

Normal Distrubution

34%

13.5%

2.35%

0.15%

Percentages in every normal distribution

Special sums of common

percentages

This is called the Emperical Rule or [68% - 95% - 99.7%] rule. Statisicians use the percentages to make all kind of Predictions.

Multiple Choice

What percent of data is $1\sigma$ from the mean?

34%

13.5%

2.5%

0.15%

Multiple Choice

What percent of data is less than $\mu$ ?

(hint: add the percentages together)

34%

16%

100%

50%

Multiple Choice

What percent of data between $-1\sigma\ and\ 2\sigma$ ?

(Hint: add the percentages together)

68%

81.5%

16%

95%

Multiple Choice

What percent of data greater than $3\sigma$ ?

2.5%

99.85%

0.15%

95%

Multiple Choice

What percent of data is $-3\$ standard deviations fromt he mean?

47.5%

81.5%

49.85%

50%

Notes: Percentages and Z-scores

We will explore how to find Percentages in a normal distrubution and how to find a z-score (where a number falls on a bell curve)

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