Statistics Name: ___________________________
Teacher: _______________
Block: ______ REVIEW: Graphical Displays 1) The histogram below is of the number of letters per word in Shakespeare’s works. a) What percentage of Shakespeare’s words had exactly 4 letters? b) What percentage of Shakespeare’s words had 4 or less letters? c) Describe the shape of the data (including the peak). d) What is the median length of Shakespeare’s words? e) What is the range of the data? 2) Which of the following datasets is most likely to be skewed left? (a) The salaries of all National Football League players. (b) The scores of students (out of 100 points) on a very easy exam in which most get nearly perfect scores but a few do very poorly. (c) The prices of homes in a large city. (d) The scores of students (out of 100 points) on a very difficult exam in which most get poor scores but a few do very well. (e) Amounts awarded by civil court juries. Statistics Name: ___________________________
Teacher: _______________
Block: ______ 3) Forty students took a statistics examination having a maximum of 50 points. The score distribution is given in the following stem­and­leaf plot. Find the median score. (4 pts) 0|28 1|2245 2|01333358889 3|001556679 4|22444466788 5|000 4) Your first job after college graduation is as a statistician for Pickle King, Inc. The data below represents the number of pickles sold in 1999 from each of the company’s 14 locations. Your boss tells you, ‘Round the data and make a stemplot.’ (5 pts per part) 682 468 333 445 710 665 647 357 605 725 385 505 410 312 a) Create a stemplot. b) What is the median of this ​
data​
? __________ c) Describe the shape of the data. d) Do you agree with your boss’s decision to round the data? Why or why not? ​
Explain completely. Statistics Name: ___________________________
Teacher: _______________
Block: ______ 5) The following are HRs per season for two baseball players. Make a back to back stemplot and compare the main features of the two distributions. (use separate paper) Sosa: 15 10 8 33 25 36 40 36 66 63 50 64 49 40 35 14 McGwire: 49 32 33 39 22 42 9 9 39 52 34 24 70 65 32 29 Statistics Name: ___________________________
Teacher: _______________
Block: ______ Use the table below to create a histogram of highway gas mileage for model year 2009 midsize cars*. MODEL
MPG MODEL
MPG Acura RL
22 Lexus GS 460
23 Acura TL
25 Lincoln MKZ 4WD
28 Audi A8
23 Mazda 6
25 Bentley Arnage
14 Mercedes­Benz E350
24 BMW M5
17 Mercury Milan 29 BMW 550i
22 Mitsubishi Galant
27 Buick Lacrosse
28 Nissan Maxima
26 Cadillac CTS
26 Nissan Altima
31 Chevy Malibu
29 Nissan Sentra
29 Dodge Avenger
30 Rolls Royce Phantom
18 Ferrari 612 Scaglietti
15 Saab 9­5 Sedan
27 Ford Fusion
28 Saturn Aura
26 Hyundai Elantra
33 Toyota Camry
28 Infiniti G37
25 Toyota Prius
45 Jaguar XF Supercharged
23 Volkswagen Passat
29 Kia Spectra 32 Volvo S80
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