Home of www.mathoninfo.net or The Mart or Commercial PagesStatistics 101Centrality, Spreads, Normality, and Chebyshev's RuleHints and Histogram for Problem 4

Problem 4. Below is a table of weekly referrals from a forum to a website. The referral pattern is quite typical for many forums. Weekly Referrals from a Forum to a Website for the first 12 weeks of 2006 Week 1/01/2006-1/07/2006 1/08/2006-1/14/2006 1/15/2006-1/21/2006 1/22/2006-1/28/2006 1/29/2006-2/04/2006 2/05/2006-2/11/2006 2/12/2006-2/18/2006 2/19/2006-2/25/2006 2/26/2006-3/04/2006 3/05/2006-3/11/2006 3/12/2006-3/18/2006 3/19/2006-3/25/2006 Referrals 271 2 1 1 0 0 5 15 12 1 4 1 For the above population data: (a) Compute the mean, (b) Determine the median, (c) Compute the variance, (d) Compute the standard deviation, (e) Compute the corresponding z-score for each weekly referral total, (f) Verify that for the z-score intervals (-1.5,1.5), (-2,2), and (-3,3) the data set conforms to Chebyshev's Rule, (g) Construct a Stem-and-Leaf Display for the referral data, and (h) Construct, using Minitab, a frequency histogram with: (i) intervals 10-referrals wide, (ii) first value in Minitab's lower interval-definition box to be midpoint of first interval and first midpoint to be 0 and last midpoint to be 270, (iii) mean and median marked by vertical lines, and (iv) z-scores below each x-axis value and the mean. Hints and Histogram for Problem 4: Centrality, Spreads, Normality, and Chebyshev's Rule

Choice Gifts for Birthday, Graduation, Mother's Day, Father's Day, Engagement, Anniversary, an Evening Out, or a Trip Abroad

Links to Amazon.com

Jewelry by Type: Earrings - Necklaces - Pendants - Brooches - Cufflinks - Money Clips

Watches: Men's Watches - Men's Watches by Gucci - Men's Watches by Movado - Men's Watches by Tissot - Men's Watches by Cartier - Women's Watches - Women's Watches by Gucci - Women's Watches by Movado

Thank you for visiting and patronizing Math on Info.

 

Top