Central Tendency

1. Which of the following are measures of central tendency?Select all that apply.
2. The mode
3. The lowest value
4. The mean
5. The highest value

1. The mean is _______________.
   1. The score with the greatest frequency
   2. The midpoint of the ordered scores
   3. The average of the lowest and highest scores
   4. The arithmetic average of all the scores

1. The median is ___________.
   1. The score with the greatest frequency
   2. The midpoint of the ordered scores
   3. The average of the lowest and highest scores
   4. The arithmetic average of all the scores

1. The mode is _____________.
   1. The score with the greatest frequency
   2. The midpoint of the ordered scores
   3. The average of the lowest and highest scores
   4. The arithmetic average of all the scores

A professor gives a statistics exam. The exam has 100 possible points. The scores for the students in the second classroom are as follows:

88 84 84 52 100 84 92 84 88

1. What is the sample size?
   1. 10
   2. 9
   3. 100
   4. 83.5

1. What is the mean?
   1. 10
   2. 9
   3. 100
   4. 83.5

While grading the exam, the professor realizes that one of the questions covered material that was not yet covered in the lectures. This question was worth 4 points, so he decides to add 4 points to everyone's score.

1. What is the new sample size?
   1. 8
   2. 9
   3. 10
   4. 11

1. What is the new mean?
   1. 87.5
   2. 88
   3. 89
   4. 86.25