| Problem |
Solution |
3) The bar graph shows the test scores from a
quiz for Mrs. Dalton's math class. Each
question was worth 4 points and no partial credit
was given. What was the class average to the
nearest tenth of a point?
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- Sum up the heights of each bar to get the total number of students. This is
_______
- Multiply the number of students in each bar by the bar's score and add:
The total of the scores is _____________
- Divide by the total number of students to get the class average =
________________
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4) Roy is looking forward to making some good money once he's
in high school. He does an informal survey of his older brother's friends. He puts the results of his survey in a table shown below. The local paper reports that the median wage for teenagers is $8.00/hour. Compute the median hourly wage for Roy's informal survey. Is the paper wrong or can you give another explanation for the difference?
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- Total up the frequencies to get the number of friends he surveyed =
_________ friends
- The median is the middle one
(counting from either end) = $______
The reason for the difference between Roy's survey and the paper's is
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5) Here's a game with one standard six sided die with the numbers 1 - 6. In at most three rolls of the die get as close to 10 as possible without going over. If you roll a 4 on the first roll, what's the probability you will go over 10 in the next two?
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- Rolling a 4 on the first roll leaves ____, so this is the probability of rolling a sum of ____ or higher with 2 dice.
- Examine this table of the sum of 2 dice.
The probability is ______
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