Warm-up 2.4 (Day 2)Sketch the bar graph and complete 1-3.

2.4 H.W. Answers #53 and 54

#53 a. The median, where 50% of the data lies, is below $0.25.

b. Q1 (The 25% mark) is around $0.10.Q3 (The 75% mark) is around $0.70.c. The data is definitely skewed to the right. Themajority of the students have less than a quarterand then the percentiles go up very slowly until itfinally reaches $2.75.d. Since the data is skewed it can not be a normaldistribution.

2.4 H.W.#54

Student of the day!Block 4

Student of the day!Block 5

Student of the day!Block 6

Recentered or Rescaled Data?1. Converting data from lbs. to kgs..

2. Converting data from U.S. dollars to Mexicanpesos. (Suppose $1 = 9.4 Mexican pesos)

3. Adding a constant c to each value of the data: x1,

x2, x3, x4, and x5.

Complete the worksheet comparing weekly payrolls of Mooseburgers and McTofu

• Think about why the mean is not always a gooddescription of the center of data?

• You will be given 15 minutes to complete thesheet and then we will be going over the answers.

• I will check the completion once the 15 minutes are up for a participation grade.

• Keep this sheet with your notes that you took today

2.4 Cummulative Relative Frequency

Pg. 78

2.5 Normal DistributionWhere do you see it? Standardized test results,probability, certain data collection from a large population.

More on Bell Curve

The 68 – 95- 99.7 Rule

Practice Reading the Bell Curve

1) What % of the data is below +1 ?2) What % of the data is located between the -2 and -1 ?

Solving Problems with Normal DistributionFor Normal Distribution Problem, always draw the bell curve and

label the values of mean and standard deviations.

Another Normal Distribution Problem

H.W. Assignment• Mooseburger McTofu worksheet • Chance for a H.W. Pass ( worth 20 pts = 1 day of ah.w. check) Download onto your TI-83, TI-83 Plus orTI-84 the program Ctlghelp.• The first 3 from each block that downloads theprogram AND can tell me how to transfer theprogram to another calculator gets a H.W. pass. **** See me tomorrow morning before 7:55, during 2nd

Block (get permission…I might be in the vault making copies), or during 7th block. Just be one of the first 3!

Histogram Worksheet Answers