Exam 10: Comparing

An independent t-test is used to identify any.

The t-test can be characterized as a regression (linear) model if?

A researcher was interested in understanding the stress levels of board members in large corporations during supplier negotiations. In one study she took a group of 8 directors and measured their anxiety (out of 15) during a normal supplier meeting and then again in another meeting in which she had paid a bogus supplier to be deliberately uncooperative. Based on the SPSS output below, how would you interpret these results?

What does the 'error bar' on an error bar chart represent?

A dependent t-test is used to identify if any?

In the study with recruitment consultants, which statement is true?

You must pitch some of your recent research to your firm's CEO. You must explain what is assessed by the statistical tests used. Which of the following would you use to describe the t-test?

Consider the following table testing whether men or women purchase, on average, more chocolate in a month? How many people took part in this experiment?

Did the independent variable have an effect?

What was the dependent variable?

Which of the following is an independent-measures design?

A repeated-measures design would be appropriate for which of the following situations?

A researcher was interested in the effects of 'hard' and 'soft' human resource management practices on sales staff performance. Two similar sales teams from the same company were chosen, with one subjected to 'hard HRM' and the other to 'soft HRM'. At the end of the quarter their sales figures were noted. The SPSS output is below. The experimenter made no predictions about which form of HRM would produce the best sales performance. What should he report?

Monthly sales figures for recruitment consultants are taken twice, one month before having advanced client care training, and one month after. What type of design is this?

An IT manager was interested in whether there was any seniority difference in the use of email. He hypothesized that because managers need to communicate with external agents more than lower-level employees do, they would spend longer using email than their subordinates. To test this hypothesis the IT manager monitored when staff used email and noted whether they were managers or lower-level employees, and then timed how long they spent using email (in minutes). What should she report?