The article “Withdrawal Strength of Threaded Nails” (D. Rammer, S. Winistorfer, and D. Bender, Journal of Structural Engineering, 2001:442–449) describes an experiment comparing the withdrawal strengths for several types of nails. The data presented in the following table are consistent with means and standard deviations reported in the article for three types of nails: annularly threaded, helically threaded, and smooth shank. All nails had diameters within 0.1 mm

of each other, and all were driven into the same type of lumber.

a. Construct an ANOVA table. You may give a range for the P-value.

b. Can you conclude that the mean withdrawal strength is different for different nail types?

Lecture 1 - Introductory Material Sunday, January 22, 2017 8:15 PM Computer Science 187 - Modifying Data Structures What is a data structure • A way to store, organize, modify, process, and use (complex) data. • Such as: ○ Arrays,lists, queues, stacks, maps, etc. Within these types there are different implementations,such as arraylist,linked list, hashmap, treemap, and more. This is more programming language specific. □ Different implementationshave different advantages and uses. • Some real life examples: ○ A collectionof names can be an array ○ Sparse data sets can be a Hash Table ○ Social networkscould be a graph (graph theory) • With this data we want to operate on it in cer