In a normal distribution of scores, which of the following is true?
a. About 5 percent of the scores are more than two standard deviations from the mean.
b. The mean score is always 0.
c. Most scores are located in the two tails at either end of the distribution.
d. The standard deviation indicates the arithmetic average score.
Question 2
What does it mean if the standard deviation of a distribution of quiz grades is 0?
a.
An equal number of people received each grade (A, B, C, D, and E).
b.
The distribution is a normal, bell-shaped curve.
c.
Everyone in the class received the same grade or score.
d.
Everyone in the class received a different grade.
A, Normal intravertebral disk; B, herniated disk.
Distribution of the Property of Americans
Normal combustion is a smooth, controlled burning of the air–fuel mixture.
A) Normal bronchiole and (B) bronchiole constricted in asthma attack.
A Scatterplot of the Test Scores and Average Grades of 10 Students
Frequency diagrams of skin colors. (a) Skin color distribution in the parents falls into two discont