Snow Day
Snow Day
Bell Ringer
If needed you can do corrections over the 2.1 exercises.
Today we are going to start normal calculations, it will be used throughout the rest of the course so it is important to understand.
Objectives
- Be able to use the Empirical Rule (68-95-99.7% Rule) to approximate the proportions of normal data falling in certain intervals.
- Understand that standardizing (by subtracting the mean and dividing by the standard deviation) allows us to compare observations from different normal distributions.
- Know that in order to use a standard normal table to do calculations involving normal distributions, we must first standardize measurements.
- Be able to use the standard normal table (z-table) to find the proportion of observations below any value of z.
- Be able to combine standardization with use of the z-table to find the proportion above, below, or between given values in any normal distribution.
- Be able to use software such as Excel, Minitab, or SPSS, or graphing calculators to perform the calculations in D and E without having to convert to z-scores.
Agenda
- Bell Ringer
- Complete this activity over the video.
- Closure
Assignments:
Normal calculations video - activity
Watch this video on using a Z score table. (Standard normal table)
Watch this video on using a caclulator for normal calculations
Watch the video over Normal Calculations
Functions to use on TI-83
normalcdf(lowerbound, upperbound, mean, standard deviation) = area under a normal curve
invnorm(Percentile, Mean, Standard deviation) = what value matches that percentile in a distribution
Assignments:
Work on problems- 2.2 Exercises pg 128
#39, 40, 41, 42, 47, 48,50, 53, 54
Bell Ringer
Objectives
Review Ch 2 Objectives
Agenda
- Bell Ringer
- Assessing normality video
- Ch 2 Frappy - after 2.2 Exercises in online book
- Ch 2 Practice Exam
- Closure
Assignments:
- Review for Ch 2 Exam