Ch 1 Skills & Concepts



Ch 2 Syllabus AP Statistics – Mrs. Buys

Skills & Concepts

Properties of a density curve

Count vs. Proportion on the y-axis

Mean of density curve = balance point

Median of density curve = “sibling” cut

Mean vs. median on a skewed curve

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Properties of a normal distribution

68-95-99.7 rule of thumb for a normal distribution

Standardizing an observation

Using table A

Assessing normality

Given percentile find z-score

Given z-score find percentile

TI-83 Skills

Table A look-ups

Normal probability plot

Vocabulary

Mean

Median

Quartile

Density curve

Inflection point

Normal curve/distribution

Percentile

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[pic]

[pic]

z (z-score)

Standardized variable

Standardized observation

Standard normal distribution

N(0,1)

Normal probability plot

Ch 2 Major Ideas: Comparing our distribution to a standardized normal distribution allows us to learn something about our data. Note: though most of the distributions that we work with in this course are assumed to be normal, NOT all distributions out there in the real world are normal!

|Ch. 2 Assignment |Due Date |

|2A: RATN Ch. 2.1 |Monday 9/19 |

|2B: Do 2.1, 2.2, 2.4, 2.6, 2.7, 2.11, 2.12, 2.14, 2.15 |Wednesday 9/21 |

|2C: RATN Ch 2.2 /Do 2.20, 2.22, 2.23 |Thursday 9/22 |

|2D: Do 2.24, 2.25, 2.28, 2.29, 2.33, 2.34, 2.35 |Friday 9/23 |

|2E: Do 2.37, 2.45 |Monday 9/26 |

|2F: Chapter 2 Quiz (30 pts) |Wednesday 9/28 |

|No School Thursday 9/29 |

**Summer Reading Homework: Discussion Question Sheet – must be completed by Fri 9/30, but do ahead of time so you do not have homework over Rosh Hashanah

Teaching Notes:

Tuck in an activity where we look at WHAT causes data to be normally distributed.

Go back to original collected distributions and assess which are normal by using a normal probability plot and the 68-95-99.7 rule.

Go back to original collected distributions and have students sketch out a density distribution for their distribution.

Need to bring home the concept that even if you are repeatedly measuring the exact same thing, you will get variation. And this variation will cause your data to be normally distributed!!

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