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POSTTEST
1 Directions: Write True if the statement is true and write the correct statement in
the underlined phrase is false.
1. If Y is a random variable that represents the number ofcars sold,
then to construct the histogram, the values of Y will lie on the x-axis.
2. A small variance means that the distribution is disperse.
3. Mean is a measure of variability.
4. If the variance is 4, then the standard deviation is 2.
5. If the variance is equal to zero, then all the values of the random
variable are zero​