# Stats Chapter 3 Review: Question Preview (ID: 32737)

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**what does the symbol ยต repesent?**

a) sample mean

b) sample standard deviation

c) population mean

d) population standard deviation

**Over the first five years of owning her car, Gina drove about 12,700 miles the 1st year, 15,478 miles the 2nd year, 12,675 the 3rd year, 11,850 the 4th year, and 13,075 the 5th year. which one will best predict how many miles Gina will drive the 6th**

a) mean = 12,700; median = 13,156; no mode; the mean is the best choice because it is representative of the entire data set.

b) mean = 13,156; median = 12,700; mode = 3,628; the median is the best choice because it is not skewed by the high outlier.

c) mean = 13,156; median = 12,700; no mode; the mean is the best choice because it is representative of the entire data set.

d) mean = 13,156; median = 12,700; no mode; the median is the best choice because it is not skewed by the high outlier.

**Find the outlier in the set of data. 3.4, 4.8, 3.1, 0.2, 6.9, 5.5, 6.6, 5.1**

a) 3.1

b) 0.2

c) 5.1

d) 6.9

**Suppose that to make the golf team you need to score no more than 74 on average over 5 games. If you scored 77, 71, 77, and 67 in your first 4 games what is the highest score you can shoot in your 5th game and still make the team?**

a) 76

b) 78

c) 79

d) 80

**Find the 5 number summary: 9, 20, 4, 18, 4, 18, 20, 9**

a) minimum 4; first quartile 10; median 16.25; third quartile 19.5; maximum 20

b) minimum 4; first quartile 6.5; median 13.5; third quartile 19.5; maximum 20

c) minimum 4; first quartile 6.5; median 13.5; third quartile 19; maximum 20

d) minimum 4; first quartile 5.25; median 16.25; third quartile 19; maximum 20

**What are the minimum, first quartile, median, third quartile, and maximum of the data set? 120, 150, 60, 70, 80, 50, 180, 70**

a) minimum 50; first quartile 57.5; median 105; third quartile 135; maximum 180

b) minimum 50; first quartile 65; median 75; third quartile 157.5; maximum 180

c) minimum 50; first quartile 70; median 105; third quartile 157.5; maximum 180

d) minimum 50; first quartile 65; median 75; third quartile 135; maximum 180

**The data 1, 5, 8, 5, 1 represent a random sample of the number of days absent from school for five students at Monta Vista High. Find the mean and the standard deviation of the data.**

a) The mean is 4, and the standard deviation is about 2.68.

b) The mean is 4.4, and the standard deviation is about 2.76.

c) The mean is 20, and the standard deviation is about 7.6.

d) The mean is 4, and the standard deviation is about 7.2.

**Find the outlier in the set of data. 17, 13, 16, 18, 38, 14, 21, 24**

a) 38

b) 14

c) 16

d) 17

**What are the mean, variance, and standard deviation of these values? Round to the nearest tenth. 1, 9, 4, 12, 13, 13**

a) mean = 10.5; variance = 2.2; standard deviation = 4.6

b) mean = 8.7; variance = 21.6; standard deviation = 4.6

c) mean = 10.5; variance = 21.6; standard deviation = 5.1

d) mean = 8.7; variance = 2.2; standard deviation = 5.1

**Find the mean, median, and mode of the data set. Round to the nearest tenth. 15, 1, 4, 4, 8, 7, 15, 4, 15, 4, 5**

a) mean = 6.8, median = 5, mode = 4

b) mean = 7.5, median = 5, mode = 4

c) mean = 7.5, median = 8, mode =4

d) mean = 6.8, median = 5, mode = 8

**The advertised rents for five apartments were $650, $650, $740, $1650, and $820. Which value best describes the monthly rents? Explain. mean = $902, median = $740, mode = $650**

a) The median best describes the rents because most of the rents were near $740.

b) The mode best describes the rents because $650 was the rent seen most often.

c) The mean best describes the rents because $902 is the average rent.

d) none of the above

**What does the symbol n represent?**

a) sample mean

b) sample size

c) population mean

d) population size

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