Is the distance you travel from home to school discrete or continuous random variable? Explain.
Q. 2The relative frequency of a class is computed by:
a. dividing the frequency of the class by the number of classes
b. dividing the frequency of the class by the class width
c. dividing the frequency of the class by the total number of observations in the data set
d. subtracting the lower limit of the class from the upper limit and multiplying the difference by the number of classes
e. adding the lower limit of the class to the upper limit and multiplying the sum by the number of classes
Q. 3From census data, a census worker obtains information regarding the number of cars per family for a certain community in Indiana. Identify the random variable of interest, determine whether it is discrete or continuous, and list its possible values.
Q. 4Descriptive statistics deals with methods of:
a. organizing data
b. summarizing data
c. presenting data in a convenient and informative way
d. all of these
e. only organizing and summarizing data
Q. 5A bridge hand of 13 cards is dealt from a standard deck. Let x represents the number of clubs in the hand. What values are possible for x?
Q. 6A relative frequency distribution is a tabular summary of a data set showing the proportions of all observations that fall into each of several collectively exhaustive and mutually exclusive classes.
Indicate whether the statement is true or false
Q. 7In order to monitor the quality of a production process, samples of size five are selected daily. The random variable of interest is the number of defectives in the five items selected. What values are possible for this random variable?
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