Math Goodies is a free math help portal for students, teachers, and parents.
|
Interactive Math Goodies Software

testing left nav
Math Forums @ Math Goodies
Home | Profile | Register | Active Topics | Members | Search | FAQ
 All Forums  Homework Help Forums  Probability and Statistics  Interpretting Stem-Leaf plots New Topic  Topic Locked  Printer Friendly
Author  Topic

jamesmartinn
New Member

2 Posts

 Posted - 09/25/2007 :  22:11:04 Hello all,I'm having a bit of trouble with one of the questions assigned for homework. The question reads:The following stem-leaf display show individual grades separately for males and females. From these results, what would you conclude about any differences between males and females?"I've scanned a picture of the stem-leaf plot: http://img.photobucket.com/albums/v646/supa69/stemleaf.jpgMy take at things: Firstly, this is purely descriptive analysis. No inferential procedures(i.e., t-test for independent samples) have been conducted, so we can't say the groups differ-significantly. However, by visual inspection, the distribution of female scores tends to be a bit negative. This means that a lot of females score high and may seem to find the course/test/exam/whatever easier, relative to the boys. I think my teacher wanted a more qualitative answer by just looking at the graph. I don't know what else to report? I'm pretty sure sample size has a role here and I know the boy's distribution is bi-modal. Please, any help is appreciated.
Topic
 New Topic  Topic Locked  Printer Friendly Jump To: Select Forum New Visitor Forum       Testing Forum Homework Help Forums       Basic Math and Pre-Algebra       Algebra       Geometry and Trigonometry       Pre-Calculus and Calculus       Probability and Statistics       Standardized Test Preparation Help       Miscellaneous Math Topics Educator Forum       Teacher Talk Parent Forum       Parent's Place  -------------------- Home Active Topics Frequently Asked Questions Member Information Search Page
 Math Forums @ Math Goodies © 2000-2004 Snitz Communications