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Chapter 12: Q4. (page 797)
Evaluate each expression.
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Which measure of central tendency best represents the data? Justify your answer. Then find the measure.
Sophia keeps track of the ages of students in her class. She wants to best represent the ages of her classmates: 13, 14, 13, 13, 14, 13, 13, 15, 14, 13, 14, 14, 10.
Find the mean absolute deviation to the nearest tenth.
A fast food company polled a random sample of its customers to find how many times a month they eat out: 10, 3, 12, 15, 7, 8, 4, 12, 9, 14, 12. Find the mean absolute deviation of the data set to the nearest tenth.
the highest point in North Carolina is Mt. Mitchell at an elevation of 2,037 meters above sea level. Suppose the position of a hiker is given by the function , where is the number of minutes. Which of the following is the best interpretation of the slope of the function?
The hiker鈥檚 initial position was 2307 feet below sea level.
The hiker鈥檚 initial position was 2037 feet above sea level.
The hiker is descending at a rate of meters per minute.
The hiker is ascending at a rate of meters per minute.
The results of a simulation of coin flipping are shown.
Outcome | Frequency |
heads | 25 |
tails | 75 |
What is the experimental probability of tails?
Evaluate each expression.
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