Suppose a woman weighs 130 pounds as measured by an accurate scale in her physician's office. Also suppose that her scale at home gives the following readings over a 5-day period: 126, 134, 128, 132, 130, so the average is an accurate 130 . Assume that her actual weight has not varied during the five days. Does her scale give reliable measurements? Does her scale give valid measurements? Explain

in both cases.

What will be an ideal response?


The scale is neither reliable nor valid. It is unreliable, since it gives inconsistent measurements, and even though the average is an accurate 130, the measurements cannot be valid, since they're unreliable.

x

Education

You might also like to view...

Brabham and Lynch-Brown asked teachers to read books to first- and third-grade students using either a just-reading method, a performance method, or an interactional method. Results showed:

a. all styles of reading are equally effective. b. the just-reading method did not result in any vocabulary gains. c. the interactional method resulted in vocabulary gains greater than both the just- read method and the performance method. d. the performance method resulted in greater vocabulary gains than both the just-read method and the interactional method.

Education

In Hinduism, the "law of karma" states that every action affects the soul and

a. how the soul will be born in the next reincarnation. b. creates a countervailing reaction of equal force. c. is forgiven by Lord Krishna and does not count. d. is to be overcome by prayer and sacrifice.

Education

Reciting from your Cornell notes does not involve

A) adjusting the information in the recall column. B) rereading instead of reciting your notes. C) covering up your notes so you only use the left column of your notes. D) getting feedback and checking the accuracy of what you recite.

Education

Turiel pointed out that Kohlberg used hypothetical situations rather than daily circumstances children encounter to develop his theory of moral development

Indicate whether this statement is true or false.

Education