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Activity No.3c (Prelim) - Statistics

Submitted By francescaarg
Words 438
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Problem Set 1 (Presentation of Data) 1.
General Instruction: 1. Prepare an MS Word Document containing your answer in each of the following numbers: 2. Submit online on or before the due date. Presentation of Data 1. The following are the number of customers a restaurant served for lunch on 50 weekdays: 50 64 55 51 60 41 71 53 63 64 55 61 60 55 53 57 58 66 53 56 59 62 56 63 61 68 57 51 61 51 64 46 59 49 64 60 58 64 42 47 49 59 66 45 61 57 65 62 58 65 a. Construct a FDT of the following data set and write a brief report about it. 2. A manufacturer of jeans has plants in California (CA), Arizona (AZ), and Texas(TX). A group of 25 pairs of jeans is randomly selected from the computerized database, and the state in which each is produced is recorded:
|CA |AZ |AZ |TX |CA |
|CA |CA |TX |TX |TX |
|AZ |AZ |CA |AZ |TX |
|CA |AZ |TX |TX |TX |
|CA |AZ |AZ |CA |CA |

a. What is the variable being measured? Is it qualitative or quantitative? b. Construct an appropriate FDT and graph to describe the data. c. Write a complete discussion about it. (use the following question for your discussion)2. What state produced the most jeans in the group? d. If you want to find out whether the three plants produced equal numbers of jeans, or whether one produced more jeans than the others, how can you use the charts from parts b to help you? What conclusions can you draw from these data? e. What proportion of the jeans are made in California? Arizona? Texas?
3. The table below shows the length of time an athlete practice for an event.
|Day |Number of Minutes |
|1 |90 |
|2 |88 |
|3 |66 |
|4 |94 |
|5 |56 |
|6 |60 |
|7 |98 |
|8 |82 |

Construct an appropriate graph and interpret the data. 4. The mobile Internet is growing, with users accessing sites such as Yahoo! Mail, the weather Channel, ESPN, Google, Hotmail, and Mapquest from their cell phones. The most popular web browser are shown in the table below, along with the percentage market share for each.
|Browser |Market Share |Browser |Market Share |
|Openwave |27% |Teleca AU |6% |
|Motorola |24% |Sony Ericcson |5% |
|Nokia |13% |RIM |5% |
|Access Net Front |9% |Blazer |4% |

1. Do the percentages add up to 100%? If not, create a category called “Other” to account for the missing percentages. 2. Use a pie chart to describe the market shares for the various mobile web browsers.

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