AP STATS Final review

First 3- The 3 CORE ideas of the unit. The next 5 are 5 questions from that unit

Unit 1- SOCS

What does SOCS stand for?

Write out a SOCS paragraph

• SOCS stands for: Shape, Outliers, Center and Spread

1. Shape refers to the general shape of the distribution: Bimodal, Roughly Symmetric, Skewed left/right(the side its leaning away from)

2. Outliers refer to deviations from the general trend/cluster of data. Can be found using the 1.5 IQR rule

3. Center refers to the measure of the center of the distribution. Use mean for a asymmetric distribution and median for a symmetric distribution, however you can probably use both

4. Spread refers to how spread out the data is: range, IQR and Standard deviation

MAKE SURE YOU INCLUDE CONTEXT

Example SOCS:

The distribution of the number of sweet shops in cities across America is Bimodal and approximately symmetric. It has a mean/median of 30 and has a range of 80. There are potential outliers at 90 and 10

Unit 1- Comparison of Distributions

What kind of language should you compare distributions with

Can you ever get set distributions from a histogram?

• When comparing distributions, it is incredibly important to provide context as to what you’re comparing.(has to be mentioned only once)

• Additionally, you must address SOCS for both of the distributions whilst you’re comparing them

• You can not get set numbers or statistics from a histogram since it only gives you ranges where the datalives

Unit 1- IQR

What is IQR and what is it a measure of?

What is the 1.5 IQR rule and how do you calculate it

• IQR is the Interquartile Range found by subtracting the Q1 from Q3

• The 1.5 IQR rule is a concrete rule for identifying outliers.

• Basically 1.5*IQR+Q3 is the upper ceiling(anything above that is an outlier) while Q1-1.5IQR is the lower limit

Unit 2-

Unit 2-

Unit 2-