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Unformatted text preview: Classwork 2 (Chapters 3 8: Chapter 4) 1' r: "‘ ~ '~ 1 Name SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Construct the requested table.
1) A car insurance company conducted a survey to find out how many car accidents people 1)
had been involved in. They selected a sample of 32 adults between the ages of 30 and 70 and asked each person how many accidents they had been involved in in the past ten
years. The following data were obtained. 01032102
11102041
20010213
13001054 Create a frequency table for the number of car accidents. Construct the requested table. Round relative frequencies to the nearest hundredth of a percent, unless otherwise
indicated. ‘ ~ ‘ 1 5’ 1‘ ' l ‘
2) The frequency table below shows the distribution ofstu’dé‘nts' scores on an exam. Construct 2)
the relative frequency table.
Scores Frequency 91  100 3
81 —90 10 71  80 10 61 — 70 5 60 or less 1 Make a bar graph to represent the data.
3) The following table shows the number of female infants born at Hospital X on New Year's 3)
Day (Ian. 1). Create a bar graph for the data. No. of Female
Year Infants Born Jan 1 1950 35 1951 20 1952 30 1953 50 1954 45 = V r 1955 40 " '5" " Construct the requested histogram. 4) A medical research team studied the ages of patients who had strokes caused by stress. The 4)
results of 34 patients are tabulated below. Use the frequency table to construct the
corresponding histogram. Age Frequency 25  29 30 — 34 35  39 40 — 44 45  49 50 — 54 55 — 59 60 — 64 mmpmpmw Construct a pie chart representing the given data set. 5) The following data give the distribution of the types of houses in a town containing 43,000 5)
houses.  House Type Frequency Relative Frequency: 1 Cape 10,750 0.25
Garrison 0.35
Split 0.40 Construct a line chart for the data. 6) 6)
Weight of Cats
Weight (lb) Number of Cats
5— 7 2
8— 10 9
11 — 13 18
14 16 13
17 19 4
20 22 1 [MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than
that used for the observations. ‘ 7) 11, 13,19, 11,17 7)
A) 14.2 B) 17.8 C) 13 D) 11 Find the mode(s) for the given sample data.
8) 20, 26, 46, 26, 49, 26, 49 8)
A) 34.6 B) 26 v . v C) 46’ D) 49 Find the median for the given sample data.
9) The salaries of ten randomly selected doctors are shown below. 9)
$122,000 $133,000 $176,000 $229,000 $225,000
$142,000 $1 12,000 $702,000 $238,000 $166,000
A) $250,000 B) $225,000 C) $171,000 D) $176,000 SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Solve the problem. 10) The federal government requires a car manufacturer to have a minimum miles per gallon 10)
(mpg) average over the cars it makes. Suppose that the models and mpg‘s for a
manufacturer are Corsair (9 mpg), Futura (8 mpg), Retro (16 mpg), and Envy (26 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. ‘ ‘ i? : ﬁ'h‘i“?! ; Provide an appropriate response. _ .
11) The histogram shows the waiting times for a new roller coaster at a theme park for a 11)
sample of 1000 riders throughout the ﬁrst week of operation. Over the histogram, draw a
smooth curve that captures its general features. Then classify the distribution according to its number of modes and its symmetry or skewness. In words, summarize the meaning of
your results. Waiting Times 250 0 5 101520 25 30 35 40 45 50 55 60 65
Times(minutes) Identify the distribution as symmetric, leftskewed, or right—skewed. 12) Number of days worked last year by adult maleS‘inTa'iUS. city which has a low 12)
unemployment rate “ ‘ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. State how many modes you would expect for the distribution described. 13) Heights of a group of college athletes consisting of the gymnastics team and the basketball team 13)
A) One  B) None C) Three D) Two Find the range for the given data. 14) Jeanne is currently taking college economics. On the past five quizzes, Jeanne got the following 14)
scores.
6 16 2 15 9
A) 14 B) 3 C) 2 D) 16 SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Obtain the five—number summary for the given data.
15) The test scores of 15 students are listed below. ’ 15)
4O 44 48 53 56 ' 60 66 69 73 79
85 87 90 94 95 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Find the range for the given data. 16) Rich Borne is currently taking Chemistry 101. On the five laboratory assignments for the quarter, he 16)
got the following scores. 23 40 14 46 56
A) 56 B) 14 (2)42 D) 17 ...
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 Spring '08
 MOODY
 Statistics

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