The analysis of Variance utilizing the F-test is the appropriate significance test to run between __________.
B. two means only
D. three or more means
Option D, because Analysis of variance using F test is a statistical tool that is used to test the significant difference of three or more means.
The mode of a score distribution is 25. This means that __________.
A. Twenty-five is the score that occurs least.
B. Twenty-five is the score that occurs most.
C. Twenty-five is the average of the score distribution.
D. There is no score of 25.
Option B. The definition of mode is the score/s that occurred most in the distribution. If 25 is the mode value, then 25 occurred most in the distribution.
If teacher gets the difference between the highest score and the lowest score, he will obtain the __________.
B. standard deviation
D. index of difficulty
Option A, because if you are going to solve the difference between the highest score and the lowest score then you are solving for the value of range. Using the formula: Range = Highest Score – Lowest Score.
In a normal curve distribution, about how many percent of the cases falls between -1SD to +1SD?
Option B, because the area of -1SD to +1SD of a normal curve distribution is 68.26%. That is, from -1SD to mean is 34.13% and from mean to +SD is also 34.13%. Thus, the sum is 68.26%.
Teacher Ruiz Glenn gave a chapter test. In terms of difficulty index, which competency did his students find the greatest difficulty?
Option A because an item is very difficult when the difficulty index range to 0 – 0.20.
Teacher Gerald gave a 50-item test where the mean performance of the class is 35, with a standard deviation of 7. Ace got a score of 41. What description rating should Teacher Gerald give to Ace?
D. Above average
Option D because the score of Ace is within the above-average scale.
Ritz Glenn obtained a NAT percentile rank of 98. This implies that ___________.
A. Ritz Glenn answered 98 items correctly.
B. Ritz Glenn got score of 98.
C. Ritz Glenn performed better than 2% of his fellow examinees.
D. Ritz Glenn performed better than 98% of his fellow examinees.
Option D. A percentile rank of 98 means that 98% of the examinees got a score below the score of Ritz Glenn. Hence, Ritz Glenn performed better than 98% of her fellow examinees.
Given two sets of data:
Set A: 6, 7, 8, 8, 9, 10, 11, 11, 11, 12, 15, 17, 19, 20, 20
Set B: 4, 4, 6, 6, 8, 9, 9, 12, 13, 15, 15, 16, 18, 18, 20
Which statement best describes both sets of data?
A. The range of set A is 14.
B. The scores of set A is more spread out than the scores of set B.
C. The range of set B is 15.
D. The scores of set B is more spread out than the scores of set A.
Option D. The range of set A is 14 while the range of B is 16. It can be said that the larger the value of the range, the more spread out the scores in a distribution.
Teacher Marcy gave a test in English item No. 18 has a difficulty index of 0.85 and discrimination index of -0.10. what should teacher Marcy do?
A. retain the item
B. make the item bonus
C. reject the item
D. reject it and make the item bonus
Option C because the item is very easy and is questionable item. Hence, she should reject the item.
Median is the 50th percentile as Q3 is to ___________.
A. 45th percentile
B. 70th percentile
C. 75th percentile
D. 25th percentile
Option C because Quarter 3 is equivalent to 75th percentile.