Your Sister Always Brags About How Savvy of a Grocery

question 129

Multiple Choice

Your sister always brags about how savvy of a grocery shopper she is.She believes that she saves lots of money by paying with coupons and making her grocery purchases at multiple stores to get the lowest prices on all goods.She may overestimate her savings because:

• A) she does not count the value of the time it took to sort and clip coupons as a cost.
• B) she does not count the cost of the gas used driving extra miles to multiple grocery stores.
• C) she does not count the value of the extra time it takes to stand in multiple lines at multiple stores and use multiple coupons compared to a trip to one store with no coupons.
• D) All of these.

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Definitions:

Standard Deviation

A metric that calculates the deviation or spread of data points in a dataset from the average value.

Range

The difference between the highest and lowest values in a dataset; it measures the extent of variability within the data.

Skewed

A description of the asymmetry in the probability distribution of a real-valued random variable, where the tail of the distribution is longer on either the right (positively skewed) or the left (negatively skewed) side.

Sample Mean

The average value of a set of data points collected from a sample of a population.