A researcher designs an intervention to combat anti-Arab oppression. She also de

Question

A researcher designs an intervention to combat anti-Arab oppression. She also designs a questionnaire to measure anti-Arab oppression so she can test the participants' level of anti-Arab oppression before and after the intervention She tests one version of her questionnaire with 45 statements and a shorter version with 12 statements. In both questionnaires, the participants respond to each statement with a rating on a 5-point Likert scale with 0 equaling "strongly disagree" and 4 equaling "strongly agree." The overall score for each participant is the mean of his or her ratings for the different statements on the questionnaire Look at the following graphs. Graph I graphs the results from the long version, and Graph II graphs the results from the short version Graph I Graph II PARTICIPANTS PARTICIPANTS LONG QUESTIONNAIRE SCORE SHORT QUESTIONNAIRE SCORE Complete the following sentences by trusting your eyes to see meaningful differences in the two graphs The range for Graph I is The mean for Graph I is the range for Graph II the mean for Graph II

Explanation / Answer

the range for graph ! IS Wider (larger) then the range for Graph II

the mean for Graph ! is equal to the mean for graph II

the variance for graph I is higher then the variace for graph II

this implies that the shorter version will be precise then the longer quetionnaire............

Note : please revert if you have options for fill in the blanks.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.