Exam 20: Appendix B: Behavioral Genetics.

To calculate the mean of a set of data,you add up all the scores and divide the result by the ____.

Hui-Hui has just received her scores on the Scholastic Achievement Test (SAT)and learns that her score was at the 84th percentile.Hui-Hui's score represents a standard score of ____.

What information is necessary to calculate the degrees of freedom for a t test?

Sumon is conducting an experiment.The six experimental groups receive three different dosage levels of a drug either in the morning or in the evening.Sumon is trying to investigate the interaction between dosage level and the time of day of the dose.Sumon will most likely choose to analyze his data with a(n)____.

Professor Kipling is discussing statistics in your introductory psychology class.She explains that descriptive statistics are invaluable because they allow psychologists to ____.

A researcher measures the number of times each of six rats has to run a maze before it masters the maze.The number of times recorded for each rat is 2,3,3,4,5,7.In this example,the ____.

While conducting statistical analysis,Gordon forgets how to calculate degrees of freedom.All he knows is that Group 1 has twenty-three subjects and Group 2 has twenty-seven subjects.How many degrees of freedom should Gordon use for his analysis?

Dr.Yodela wants to find out whether there is a significant difference in the mean scores of two groups on his new intelligence test.Which statistic should Dr.Yodela use?

Eunice is a new elementary school principal.One of her first projects is to determine whether students have been appropriately assigned to either the Sparrow,Blue Jay,or Robin reading groups.She administers the Miller Reading Ability Test (MRAT)to all three groups.What statistical analysis should Eunice use to compare the means of the three groups?

Fiona,a quantitative psychologist,is interested in using inferential statistics because they provide ____.

In Diti's study,employees who listened to rap music produced an average of 5.71 units and employees who listened to polka music produced an average of 2.71 units.To see if the difference between these means is statistically significant,Diti should ____.

Renata runs a study looking at the drinking habits of undergraduates,and suspects the results would show that the amount a student drank will be related to his or her grade-point average (GPA).Instead,she finds that drinking habits (amount of drinks per week)are not related to GPA.This means that ____.

Dr.Banguna is conducting an experiment to discover the effects of money payments (independent variable)on work performance (dependent variable).Dr.Banguna's null hypothesis would state ____.

As a researcher,you are interested in how the scores in your data set are dispersed.Specifically,you want to know the average difference between each score and the mean.You would find out this information by looking at the ____.

Dorothea conducts a survey to find out how many national parks people have visited in the past two years.She polls twenty people and finds that ten people have visited no national parks; five people have visited one national park; four people have visited two national parks; and one person has visited twenty national parks.Which measure of central tendency should Dorothea use to provide the most accurate picture of her data?

Francesca is at a casino watching a game involving dice.She determines that one of the dice is loaded,causing it to turn up "3" more often than would be expected by chance.To know for certain if this was true,Francesca would have to conduct a study to determine if her findings have statistical ____.

Descriptive statistics will allow you to compute ____.

Anqi is creating a picture-like graphic for her research paper.This graphic will be used to summarize and describe data she collected.Anqi is creating a ____.

Clint has learned his standard score on a standardized achievement test is -1 (minus one).What percentage of test takers performed better than Clint?

Your friend places 11 numbers into a hat without showing you what those numbers are.He tells you he will give you $10 if you can guess the exact number that he will randomly pick out of the hat.He says that the mean of the numbers is 5,the median is 6,and the mode is 8.What would your best guess be?