There are different kinds of curves. All density curves must satisfy the conditions that;
- The curve does not go below horizontal axis
- The total area under the curve is = 1.
What conditions must a density curve adhere to?
Note that a probability density curve must satisfy two key requirements: that is;
- F(x) have to be nonnegative for all value of the random variable.
- The integral that is over each values of the random variable have to be equal to one.
A density curve is regarded as a curve that is said to be always on or found above the horizontal axis, that is, it is always negative and its area is equal to 1 under it.
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