Price of A Volatile Stock Statistical Analysis Essay

Price of A Volatile Stock Statistical Analysis Essay

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Statistical Analysis … EXAM, 2

Question 20 of 20

5.0 Points

The table shows the price of a volatile stock from the months January 1999 through December 1999 as determined by the closing price on the last trading day of the month. The price is rounded to the nearest dollar.

Which time series line chart represents the data?

A.

B.

C.

1. None of the above

Question 19 of 20

5.0 Points

The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September, 2006. 6, 5, 6, 4, 6, 6, 9, 7, 6, 3, 8, 5, 5, 8, 6, 5, 8, 6, 5, 7, 5, 8, 7, 4 Using bins of 2 hours width, which relative frequency histogram represents the data?

A.

B.

C.

1. None of the above

Question 18 of 20

5.0 Points

Identify the utility that decreases as a percentage of the total utility bill from January to June.

1. Electric
2. Natural Gas
3. Water
4. None decrease from January to June.

Question 17 of 20

5.0 Points

Find the original data from the stem–and–leaf plot.

1. 11, 18, 23, 23, 27, 33, 34, 38, 39, 43, 44
2. 2, 9, 2, 2, 4, 8, 4, 4, 6, 11, 12, 7, 8, 12
3. 13, 13, 14, 21, 21, 23, 27, 31, 31, 43, 44
4. 11, 18, 21, 21, 23, 27, 31, 33, 33, 38, 39, 43, 44

Question 16 of 20

5.0 Points

Identify the class that has had the greatest percentage increase with respect to its initial percentage over the five decades.

1. Fr
2. So
3. Jr
4. Sr

Question 15 of 20

5.0 Points

The stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the U.S. that occurred in three ethnic groups in 2003.

In which geographic area did Hispanics account for their highest percentage of cancer deaths in 2003?

1. Northeast
2. Midwest
3. South
4. West

Question 14 of 20

5.0 Points

The data below represent the results of a poll in which the following questions was asked: “To what degree are you satisfied with your current health insurance?” Which pie chart below represents the given data set?

Very               14.5%

Somewhat      26.3%

Not at all         36.8%

No opinion      22.4%

A.

B.

1. Both represent the data.
2. Neither represent the data.

Question 13 of 20

5.0 Points

A machine is supposed to fill juice bottles with 16 fluid ounces of juice. The manufacturer picks a sample of bottles that have been filled by the machine and determines the volume of juice in each bottle. The results are shown in the following stem–and–leaf diagram. The leaf unit is 0.1.

How many bottles were sampled?

1. 9
2. 10
3. 15
4. 44

Question 12 of 20

5.0 Points

The ages of employees of a company are summarized in the frequency table. Which line chart below represents the data?

A.

B.

C.

D.

None of the above

Question 11 of 20

5.0 Points

Identify the class that has the greatest increase in 2.5 or better GPA’s over the five decades.

1. Sr
2. Jr
3. So
4. Fr

Question 10 of 20

5.0 Points

The stem-and-leaf plot below shows the weights in pounds of halibut caught on an Alaskan fishing boat for one day.

How many values are there less than 40?

1. 6
2. 8
3. 9
4. 5

Question 9 of 20

5.0 Points

Which line chart below represents the data?

A.

B.

C.

1. None of the above

Question 8 of 20

5.0 Points

The stem-and-leaf plot below shows the weights in pounds of halibut caught on an Alaskan fishing boat for one day.

List all of the original weights.

1. 29, 31, 36, 37, 38, 40, 42, 43, 46, 47, 51, 52, 54, 60
2. 29, 31, 32, 36, 37, 38, 38, 40, 42, 43, 46, 47, 51, 54, 60
3. 29, 31, 32, 36, 37, 38, 40, 42, 43, 45, 46, 47, 51, 52, 54, 60
4. 29,31,32,36,37,37,38,38,40,42,43,43,45,45,46,47,51,52,54,60

Question 7 of 20

5.0 Points

Identify the class that had the lowest percentage increase in 2.5 or better GPA’s between the fourth and fifth decades.

1. Sr
2. Jr
3. So
4. Fr

Question 6 of 20

5.0 Points

Find the original data from the stem-and-leaf plot.

1. 95, 91, 99, 101, 111, 115
2. 91, 95, 91, 109, 119, 115
3. 95, 99, 101, 101, 115, 115
4. 95, 99, 101, 109, 115, 115

Question 5 of 20

5.0 Points

Which line chart below represents the data in the table?

A.

B.

C.

1. None of the above

Question 4 of 20

5.0 Points

Identify the utility that has its smallest percentage of the total bill in March.

1. Gas
2. Electric
3. Water
4. None of the utilities has its smallest percentage of the total bill in March

Question 3 of 20

5.0 Points

The histogram below shows the ages of the actors who won the Academy Award for best actor from 1970 to 2006.

How many of the award winners were 50 years old or older at the time they won their Oscar?

1. 6
2. 9
3. 15
4. 18

Question 2 of 20

5.0 Points

Identify the utility that accounts for over half the total bill in two months.

1. Water
2. Electric
3. Gas
4. No single utility accounts for more than half the total bill in two months

Question 1 of 20

5.0 Points

The table shows the end–of–the–month checking account balance of a statistics teacher for the months January 1999 through December 1999 as determined by the closing balance on the last banking day of the month. The balance is rounded to the nearest dollar.

A.

B.

C.

1. None of the above

7

4. An airplane ticket costs $200 if there are 50 or fewer people on the plane. But for each passenger over 50, the price per ticket is reduced by $2. (For example, if there are 52 passengers, then a ticket costs $196.) If revenue is maximized, how many people would be on the plane?
5. Determine the point(s) on the curve y = x2 + 1 that are closest to (0, 2).
6. Let x and y be positive numbers whose sum is 50 (i.e., x + y = 50). What is the largest

possible value of the product xy?

7. The number of bacteria N grows according to the formula N(t) = 6000t , where t 60+t2

is measured in weeks. What is the maximum size of the population, and when does this happen?

8. How fast does the water level drop when a cylindrical tank with a radius of 6 feet is drained at a rate of 3 ft3/min? (The volume V of a cylinder is V = πr2h, where r is the radius and h is the height of the cylinder.)

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