Directions: After each of the following items write either the word TRUE or the

Question

Directions: After each of the following items write either the word TRUE or the word FALSE 1. y, y and s all have the same units. 2. If all the numbers in a valid data set are negative then the variance will also be negative. 3. C(n,0) = P(n,0). 4. For some possible valid data sets: s s. 5. Values for probability can range from -1 to +1. 6. The Poisson distribution is an example of a continuous pdf. 7. If one wants to do two independent events then one adds their probabilities. 8. For a normal distribution, approximately 95% of all possible values will be within two standard deviations from the mean. 9. A platykurtic distribution is one with a broad peak and very short tails. 10. If the coefficient of variation is 1.0 then the data follow a Poisson distribution.

Explanation / Answer

1. True

2. False, because sum of squares cannot be negative

3. True

4. True

5.False, the range of Prob will be 0 to 1

6 False, it is an example of Discrete pmf

7. False, when events are independent, there prob. shold be multiplied

8. True

9, True

10. False,

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