warm-up 2.4 (day 2) sketch the bar graph and complete 1-3
TRANSCRIPT
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Warm-up 2.4 (Day 2)Sketch the bar graph and complete 1-3.
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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.
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2.4 H.W.#54
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Student of the day!Block 4
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Student of the day!Block 5
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Student of the day!Block 6
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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.
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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
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2.4 Cummulative Relative Frequency
Pg. 78
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2.5 Normal DistributionWhere do you see it? Standardized test results,probability, certain data collection from a large population.
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More on Bell Curve
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The 68 – 95- 99.7 Rule
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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 ?
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Solving Problems with Normal DistributionFor Normal Distribution Problem, always draw the bell curve and
label the values of mean and standard deviations.
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Another Normal Distribution Problem
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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!
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Histogram Worksheet Answers