True or false: continuous variables

Exercise and reference answers

Questions

1. Statement is true

   Yes

   Statement

   Probability is the area under the density curve.

2. Statement is true

   Yes

   Statement

   P(x = c) is zero for a continuous variable.

3. Statement is true

   No

   Statement

   The cdf draws the curve, the pdf gives area.

4. Statement is true

   Yes

   Statement

   In X ~ U(a, b), a is the lowest value of x.

5. Statement is true

   No

   Statement

   The exponential needs no parameter at all.

Instructions

Tap True or False for each statement.

Explanation