Statistics Normal Distribution Warm Up Essential Question What

Statistics: Normal Distribution Warm Up:

Essential Question: What is true about normally distributed data?

Normal Distribution: What percent of the data would you expect in each region of the normal distribution curve?

How to draw a normal distribution curve? Step 1: Find the number that is + or minus 1, 2, and 3 standard deviation from the mean. Step 2: Draw the

Homework Questions

Remember Teacher Curve:

Last Problem on Homework: Set up a “Teacher curve” for a class in which the mean was 85 with a standard deviation of 7. Show what percentages would earn a A, B, C, D and F. How does it compare to Ragsdale’s scale?

Normal Distribution Foldable: Cut it Fold It Glue It Fill out information

What happen if the number don’t fall within the 1 -3 standard deviation? How do you find the probability given the interval or not within the perfect standard deviation? How do you find the interval of data given a probability? Let’s observe http: //www. mathsisfun. com/data/stan dard-normal-distribution-table. html

To find probability given an interval 1. Set up equation using the mean and the interval given to find how many standard deviation are we within. 2. Look at the chart to see the probability

A set of 500 values is normally distributed with a mean of 24 and a standard deviation of 2. What percent of the data is in the interval 20. 5 – 27. 5?

A set of 500 values is normally distributed with a mean of 24 and a standard deviation of 2. What percent of the data is in the interval 19. 3 – 28. 7?

A set of 500 values is normally distributed with a mean of 24 and a standard deviation of 2. What percent of the data is in the interval 20 – 26. 5? What do we do if our standard deviation doesn’t match? Average

To find interval given probability 1. Look at the chart to see where the probability is and located the standard deviation 2. Set up equation to find the interval

A set of 500 values is normally distributed with a mean of 24 and a standard deviation of 2. Find the interval about the mean that includes 50% of the data

A set of 500 values is normally distributed with a mean of 24 and a standard deviation of 2. Find the interval about the mean that includes 95% of the data

Revisiting the EQ: What is true about normally distributed data?