Answer:
The curve is on or above the horizontal axis ⇒ 1st
The total area under the curve is 1 ⇒ 2nd
The proportion of data values between two numbers and is the area
under the curve between a and b ⇒ 4th
Step-by-step explanation:
* Lets explain the meaning of density curve
- Density curve is a mathematical model for a distribution of a variable
- It is another type of graph that represents a quantitative variables
- It describes the overall pattern of a distribution
- Its area is always on or above the horizontal axis
- Its area under the curve is exactly 1
- It can come in many shapes - symmetric, right-skewed, left-skewed
- 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
- Ex: density curve describes the probability distribution of a
continuous random variable
The probability of any event is the area under the curve and above
the values that make up the event.
* Now lets chose the true statements
# The curve is on or above the horizontal axis
# The total area under the curve is 1
# The proportion of data values between two numbers and is the area
under the curve between a and b
