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Chapter 3: Q. 3.101 (page 122)
Apply Chebyshev's rule with and interpret your answer.
For Chebyshev鈥檚 Theorem states that at least of the observations fall inside that range, and no more than fall outside that range.
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Net worth: The board of Governors of the Federal Reserve system publishes information on family net worth in the survey of consumers fiances. Inthe mean net worth of the families in the united state wasrole="math" localid="1650792936700" thousand and the median net worth wasrole="math" localid="1650792957167" thousand. Which measure of center do you think is more appropriate? Justify your answer.
The data set has observations and has mean and standard deviation . Approximately how many observations lie between and .
The data set has mean and standard deviation . Fill in the following blanks:
a. Approximately of the observations lie between_ and _
b. Approximately of the observations lie between _and _
c. Approximately of the observations lie between _ and _
Fill in the following blanks.
(a) A standardized variable always has mean _____ and standard deviation _______ .
(b) The z-score corresponding to an observed value of a variable tells you ______ .
(c) A positive z-score indicates that the observation is ______ the mean, whereas a negative z-score indicates that the observation is _______ the mean.
A quantitative data set has size . At least how many observations lie within two standard deviation to either side of the mean
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