Friday
March 27, 2015

Homework Help: statistics

Posted by Anonymous on Friday, October 16, 2009 at 2:34pm.

An animal trainer obtained the following sample data (Table A) in a study of reaction times of dogs (in seconds) to a specific stimulus. He then selected another group of dogs that were much older than the first group and measure their reaction times to the same stimulus. The sample data is shown in Table B.
Table A Table B
Classes Frequency Classes Frequency
2.3-2.9 24 2.3-2.9 4
3.0-3.6 24 3.0-3.6 21
3.7-4.3 14 3.7-4.3 8
4.4-5.0 5 4.4-5.0 0
5.1-5.7 4 5.1-5.7 24
5.8-6.4 16 5.8-6.4 20


Find the variance and standard deviation for the two distributions above. Compare the variation of the data sets. Decide if one data set is more variable than the other

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - There are 4150 dogs in animal shelters in a particular state. A sample of...
statistics - Siegel found that elderly people who owned dogs were less likely to...
statistics - Table: Like Dogs Yes No Like cats Yes 194 21 No 110 10 For parts a-...
Statistics - Siegel found that elderly people who owned dogs were less likely to...
Math - A pet shop has a total of 17 dogs and birds. Altogether there are 48 feet...
Science - Which adaptation helps some plants that live in the dry deserts? A....
9th grade - A biologist gives a new kind of food to a group of dogs and compares...
statistics - Consider a hypothetical population of dogs in which there are four ...
Math - Consider the box-and-whisker graphs shown. They suggest that a U.S. ...
math - Suppose the mean of dogs a pet shop grooms each day is known to be 14.2 ...

Members