Which of the following is NOT a measure of central tendency?

• Mode

• Variance

• Median

• Mean

When is the median the most appropriate measure of central tendency?

• Distribution is skewed; and number of samples is less than 30.

• Variance is heterogeneous.

• Distribution is normal; and number of samples is more than 30.

• Variance is homogeneous.

In which competency do my students find greatest difficulty? In the item with the difficulty index of ___.

• .10

• .90

• 1.0

• .50

A test item with a discrimination index of .10 is ____________.

• very good

• reasonably good

• poor

• neither good nor bad

Which items do NOT affect the variability of test scores?

• Test items that every examinee gets correctly

• Test items that are a bit difficult

• Test items that are a bit easy

• Test items that are moderate in difficulty

Which applies when the score distribution is concentrated on the left side of the curve?

• Bimodal

• Positively skewed

• Bell curve

• Negatively skewed

Concurrent validity requires ________________.

• peer consultation

• item difficulty

• correlation study

• item analysis

The index of difficulty of a particular test item is .10. What does this mean? My students _________.

• found that test item was neither easy nor difficult.

• performed very well against expectation

• were hard up in that itemgained mastery over that item

• gained mastery over that item

Which one describes the percentile rank of a given score?

• The percent of cases of a distribution within the given score.

• The percent of cases of a distribution above the given score.

• The percent of cases of a distribution below and above the given score.

• The percent of cases of a distribution below the given score.

Which statement about standard deviation is CORRECT?

• The higher the standard deviation, the more spread the scores are.

• It is a measure of central tendency.

• The lower the standard deviation, the more spread the scores are.

• The higher the standard deviation, the less spread the scores are.