Find the median of the data - suppose that bone ranch wave


Question 1

The batting averages of the first three batters in the EurekaCollege women's softball team lineup are .310, .301, and .277. If the first three batters are considered as the "lead-off group", what is the batting average of the group?

A. .301
B. .296
C. There is insufficient information to answer the question
D. None of the above


Question 2

The students in Hugh Logan's math class took the Scholastic Aptitude Test. Their math scores are shown below. Find the mean score.
552 593 358 352 537 349 357 596 470 482

A. 446.8
B. 474.6
C. 462.8
D. 464.6

Question 3
Use the range rule of thumb to approximate the standard deviation.
496, 598, 503, 528, 565, 601, 576, 543

A. 170.2
B. 60.6
C. 26.25
D. 18.75


Question 4
The normal monthly precipitation (in inches) for August is listed for 20 different U.S. cities. Find the median of the data.
A. 2.79 in.
B. 3.45 in.
C. 3.35 in.
D. 2.45 in.


Question 5
The host of a dinner party purchases wine based on the weighted average of clarity (10%), bouquet (5%), friendliness to the palate (5%), storage ability of opened bottles (40%), and price (40%). Suppose that Bone Ranch Wave has scores in these categories of 4, 5, 3, 8, and 9, respectively. What is its rating?

A. 5.80
B. 5.00
C. 7.60
D. None of the previous


Question 6 Al and Joe are two county sheriff's deputies assigned to watch for traffic violations. Their arrest and conviction records for May and June are shown below. Who had the best conviction percentage in June?

A. Al
B. Joe
C. They are equal
D. Cannot tell by the data available


Question 7
The mathematics SAT scores of the seven students in a mathematics seminar are 538, 550, 570, 593, 610, 622, and 634. Suppose the student with the score 634 drops the seminar and is replaced by a student with a score of 600. What will happen to the mean and the median scores of the class?

A. Neither mean nor median will change.
B. The median will decrease, the mean will not change.
C. The median will not change, the mean will decrease.
D. Both mean and median will decrease.


Question 8 Al and Joe are two county sheriff's deputies assigned to watch for traffic violations. Their arrest and conviction records for May and June are shown below. Who had the best conviction percentage overall?

A. Al
B. Joe
C. They are equal
D. Cannot tell by the data available



Question 9
The federal government requires a car manufacturer to have a minimum miles per gallon (mpg) average over the models it makes. Suppose that the mpg's for the five models of a manufacturer are 19, 21, 22, 28, and 18, and the government requirement is 27 mpg. The last of the models is to be redesigned to meet the government requirement. What must the new mpg of this model be to meet the requirement?

A. 27 mpg
B. 29 mpg
C. 30 mpg
D. 54 mpg


Question 10
Consider the distribution of mathematics SAT scores of students in honors calculus at a liberal arts college. What would you expect the shape and variation of the distribution to be?

A. Symmetric with little variation
B. Symmetric with large variation
C. Skewed right with large variation
D. Skewed left with little variation


Question 11
Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 15, 42, 53, 7, 9, 12, 14, 28, 47

A. 29.1
B. 16.6
C. 17.8
D. 15.8

Question 12
Find the mode(s) for the given sample data. 7.29, 7.41, 7.56, 7.29, 7.88, 7.99, 7.62

A. 7.56
B. 7.29
C. 7.577
D. 7.41



Question 13
Consider the distribution of heights of all the players in the National Basketball Association. What would you expect the shape of the distribution to be?

A. Skewed right
B. Skewed left
C. Symmetric
D. Multi-peaked

Question 14
The federal government requires a car manufacturer to have a minimum miles per gallon (mpg) average over the cars it makes. Suppose that the models and mpg's for a manufacturer are Corsair (31 mpg), Futura (30 mpg), Retro (37 mpg), and Envy (44 mpg). Twenty percent of the cars sold are Corsairs, 30% are Futuras, 40% are Retros, and 10% are Envys. Find the average mpg for this manufacturer.

A. 35.5 mpg
B. 34.0 mpg
C. 34.4 mpg
D. None of the above

Question 15
Use the range rule of thumb to approximate the standard deviation.
22,29, 21, 24, 27, 28, 25, 38

A. 3.50
B. 4.0
C. 4.25
D. 2.8

Question 16
The mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619, 626, and 633. Suppose that the student with the score 533 drops the seminar and is replaced by a student with a score of 765. What will happen to the mean and the median scores of the class?

A. The mean will increase; the median will be unchanged.
B. The median will increase; the mean will be unchanged.
C. Neither the mean nor the median will change.
D. Both the median and the mean will increase.



Question 17
The weights (in ounces) of 21 cookies are shown. Find the median weight.

0.62 1.25 0.60 1.62 0.75 0.74 1.35
1.25 1.53 0.99 0.62 1.25 1.28 0.66
0.47 1.25 0.74 1.28 1.72 0.75 0.56

A. 0.99 ounces
B. 1.01 ounces
C. 0.98 ounces
D. 1.00 ounces


Question 18
Find the mode(s) for the given sample data. 20, 49, 46, 43, 49, 43, 49, 20, 22

A. 43
B. 49
C. 20
D. 22

Question 19
The grocery expenses for six families were $80.86, $47.74, $57.92, $81.08, $75.18, and $88.08. Compute the mean grocery bill. Round your answer to the nearest cent.

A. $71. 82
B. $73.79
C. $72.81
D. $71.81


Question 20
Last year, a road construction firm hired 11 new employees. Their ages at hiring are listed below. Find the mean hiring age to one decimal place.

23 19 30 33 27 31 58 22 21 26 29

A. 29.1
B. 28.0
C. 29.2
D. 29.0

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