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Probabilistic and Statistical Techniques. Lecture 7 Eng. Heba Hamad 2008. Probabilistic and Statistical Techniques. Chapter 2 Revision. Probabilistic and Statistical Techniques. Exercise 1. Fine mean, median, mode, midrange. Probabilistic and Statistical Techniques. Solution.

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probabilistic and statistical techniques
Probabilistic and Statistical Techniques

Lecture 7Eng. Heba Hamad2008

Lecture 7

slide3

Probabilistic and Statistical Techniques

Exercise 1

Fine mean, median, mode, midrange

Lecture 7

slide5

Probabilistic and Statistical Techniques

Exercise 2

Fine Standard deviation, variance for each of the two sample

Lecture 7

slide8

Probabilistic and Statistical Techniques

Exercise 4

Fine the indicated quartile or percentile

a) Q1, b) Q3, c) P80, d) P33

Lecture 7

slide9

Probabilistic and Statistical Techniques

Exercise 5

The given values are the services times (in seconds) of McDonalds drive - through customers. McDonalds want to maintain a mean of a 90 sec or less. Did they succeed ?

88 107 35 93 65 55 119 83 99 74 46 108

Lecture 7

slide10

Probabilistic and Statistical Techniques

Probabilistic and Statistical Techniques

Exercise 6

The following frequency table describes the speeds of drivers ticketed by some town police. These drivers were traveling through a 30 mi/h speed zone on the road. How does the mean comparing to the posted speed limit of 30mi/h

Lecture 7

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Probabilistic and Statistical Techniques

Exercise 7

The test score in a statistics class have a mean of 75 and a standard deviation of 12. use the range rule of thumb to estimate the minimum and maximum usual scores. Is a score of 50 considered unusual in this context ?

Lecture 7

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Probabilistic and Statistical Techniques

Exercise 8

What do you know about the values in a data set having a standard deviation of s = 0 ?

Lecture 7

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Probabilistic and Statistical Techniques

Exercise 9

A small business consultant is investing the performance of several companies. The sales for the selected companies were:

Lecture 7

slide14

Probabilistic and Statistical Techniques

Exercise 9 continued

The consultant wants to include a chart in his report comparing the sales of the six companies. Use bar chart to compare the sales of these companies.

Lecture 7

slide15

Probabilistic and Statistical Techniques

Exercise 9 continued

Lecture 7

slide16

Probabilistic and Statistical Techniques

Exercise 10

A headline in a Toledo, Ohio, newspaper reported that crime was on the decline. Listed below are the no. of homicides from 1986 to 2002. draw a line chart to summarize the data of the homicide rates for the last 17 years.

Lecture 7

slide17

Probabilistic and Statistical Techniques

Exercise 10continued

Lecture 7

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Probabilistic and Statistical Techniques

  • Exercise 11
  • The Apollo space program lasted from 1967 until 1972 and included 13 missions. The missions lasted from as little as 7 hours as long as 301 hours. The duration of each flight is listed below:
  • 195 241 301 216 260 7 244 192 147 10 295 142
  • Find the mean and median of the flight times
  • Find the range and the standard deviation of the flight times

Lecture 7