% 2 5 € 6 Descriptive Statistics: Tabular and Graphical Displays Chapter 2 Number of Number of Visitors in a Month Website Visitors in a Month Website 24 mozilla.org 31 about.com 110 23 msn.com adobe.com 23 nytimes.com paypal.com pinterest.com quizlet.com sascdn.com 72 amazon.com 38 67 answers.com 58 38 aol.com 23 32 ask.com 33 87 bing.com blogger.com blogspot.com bustle.com 24 smartyads.com southwest.com 31 DATA file 28 27 25 WebVisitors stackexchange.com tumblr.com 23 25 68 buzzfeed.com 198 twitter.com craigslist.org curiositystream.com ebay.com facebook.com 26 28 urbandictionary.com urbanoutfitters.com 40 39 58 89 videoamp.com walmart.com 129 25 footlocker.ca 23 24 wayfair.com weather.com foxnews.com 26 40 23 go.com godaddy.com google.com linkedin.com 26 whitepages.com wikia.com 32 41 220 46 wikipedia.org wordpress.com yahoo.com yelp.com youtube.com 39 35 live.com 49 43 30 lowermybills.com microsoft.com 73 67 222 40 monster.com Summarize the data by constructing the following: A frequency distribution (classes in millions: 20-29.999, 30-30.999, and so on). b. A relative frequency distribution. a. A cumulative distribution. C. d. A cumulative relative frequency distribution. Show a histogram. Comment on the shape of the distribution. f. What is the website with the most U.S. visitors? How many people from the U.S. visited the site? e. 22. Entrepreneur magazine ranks franchises using performance measures such as growth rate, number of locations, startup costs, and financial stability. The number of locations for the top 20 U.S. franchi ses follow (7The World Almanac, 2012). No. U.S. Locations No. U.S. Locations Franchise Franchise Hampton Inn Jan-Pro Franchising Intl. Inc. Hardee's Pizza Hut Inc. 1,864 3,183 32.805 12.394 1,901 ampm McDonald's 13,281 7 Rleyen In 37.100

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Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.