STAT 1000 EXAM 9 QUESTIONS AND 100%
CORRECT ANSWERS!!
Why is area under any density curve always 1?
This is because the area under the curve and above any range of values on the horizontal axis is
the proportion of all observations that fall in that range
What is the mean of a density curve?
The mean of a density is the balance if made of solid material.
What is the median of a density curve?
The median of a density curve is the equal areas point - the point that divides the area under the
curve in half.
What is the median and the mean are the for a symmetric density curve?
The median and the mean are the same for a symmetric density curve. They both lie at the center
of the curve. The mean of a skewed curve is pulled away from the median in the direction of the
long tail.
How do we represent the mean and standard deviation of the actual distribution by the
density curve?
u - mu - mean
sigma - standard deviation
What are characteristics for normal distributions?
CORRECT ANSWERS!!
Why is area under any density curve always 1?
This is because the area under the curve and above any range of values on the horizontal axis is
the proportion of all observations that fall in that range
What is the mean of a density curve?
The mean of a density is the balance if made of solid material.
What is the median of a density curve?
The median of a density curve is the equal areas point - the point that divides the area under the
curve in half.
What is the median and the mean are the for a symmetric density curve?
The median and the mean are the same for a symmetric density curve. They both lie at the center
of the curve. The mean of a skewed curve is pulled away from the median in the direction of the
long tail.
How do we represent the mean and standard deviation of the actual distribution by the
density curve?
u - mu - mean
sigma - standard deviation
What are characteristics for normal distributions?
