1.   A graph is misleading if ______.
    A. there are no labels on either scale B. it is a bar graph
    C. it has a title D. it is a line graph with years labeled on the horizontal axis

  2.   Which statistic reveals the least about the increase in the following average gasoline prices for seven consecutive weeks?
$1.05, $1.05, $1.05, $1.55, $1.65, $1.75, $2.00
    A. median B. mean
    C. mode D. range

  3.   Which statistic gives the most meaningful information about the central tendency of the data {23, 25, 26, 26, 27, 29, 29, 30, 450, 450, 450}?
    A. mode B. range
    C. median D. mean

  4.   Both bar graphs show the amount it costs to heat a two-story house during the winter. Which graph is misleading? Explain.
    A. Graph B; the months are not ordered from least to greatest cost.
    B. Graph A; the months are not ordered from greatest to least cost.
    C. Graph A; there is no break in the vertical scale, the cost of heating the house in December and February are about the same.
    D. Graph B; there is a break in the vertical scale, the cost of heating the house in January appears to be much greater than heating the house in November.

  5.   The line graph shows the average price of gas for one recent month in Austin, Texas. Why is the graph misleading?
    A. The vertical axis is not labeled.
    B. It shows that price of gas changed dramatically during the month.
    C. The horizontal scale is missing the odd-numbered days.
    D. It shows that the highest price occurred at the beginning of the month and the lowest price occurred at the end of the month.

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