Exam 12: Statistics

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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. -The batting percentages of some of the players on the company softball team are .217, .333, .210, . 294, .229, .300, and .283. What is the mean batting percentage of these players? Round to the Nearest thousandth.

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On a math test, the scores of 24 students were 99 76 77 61 77 77 99 82 77 66 82 76 76 82 77 76 82 77 76 82 76 82 82 61 Construct a frequency and relative frequency distribution. Use 4 classes beginning with a lower class limit of 60 .

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Construct a frequency polygon. - Weight of bag of chips (in ounces) Number of bags 15.6-15.7 6 15.8-15.9 22 16.0-16.1 35 16.2-16.3 27 16.4-16.5 10  Construct a frequency polygon. - \begin{array}{l|c} \begin{array}{l} \text { Weight of bag } \\ \text { of chips (in ounces) } \end{array} & \begin{array}{l} \text { Number of } \\ \text { bags } \end{array} \\ \hline 15.6-15.7 & 6 \\ 15.8-15.9 & 22 \\ 16.0-16.1 & 35 \\ 16.2-16.3 & 27 \\ 16.4-16.5 & 10 \end{array}

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Find the median for the given sample data. -The salaries of ten randomly selected doctors are shown below. \ 143,000 \ 140,000 \ 170,000 \ 238,000 \ 248,000 \ 108,000 \ 113,000 \ 882,000 \ 205,000 \ 183,000 Find the median salary.

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Use this graph to answer the question. Use this graph to answer the question.   -What were the total sales for the first 6 months of 2010? -What were the total sales for the first 6 months of 2010?

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Make a bar graph to represent the data. -The following table shows the number of male infants born at Hospital X on New Year's Day (Jan. 1). Create a horizontal bar graph. No. of Male Year Infants Born on Jan 1 1960 9 1961 21 1962 15 1963 24 1964 15 1965 15

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Use the information to complete a circle graph. Note that the circle is divided into 100 equal sections. -Main form of exercise for employees of one company: None: 30\% Walking: 18\% Running: 4\% Golf: 11\% Weight Training: 26\% Other: 11\%  Use the information to complete a circle graph. Note that the circle is divided into 100 equal sections. -Main form of exercise for employees of one company:  \begin{array}{lr} \text { None: } & 30 \% \\ \text { Walking: } & 18 \% \\ \text { Running: } & 4 \% \\ \text { Golf: } & 11 \% \\ \text { Weight Training: } & 26 \% \\ \text { Other: } & 11 \% \end{array}

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Use the information to complete a circle graph. Note that the circle is divided into 100 equal sections. -Main form of exercise for employees of one company: None: 28\% Walking: 19\% Running: 6\% Golf: 11\% Weight Training: 25\% Other: 11\%  Use the information to complete a circle graph. Note that the circle is divided into 100 equal sections. -Main form of exercise for employees of one company:   \begin{array} { l r }  \text { None: } & 28 \% \\ \text { Walking: } & 19 \% \\ \text { Running: } & 6 \% \\ \text { Golf: } & 11 \% \\ \text { Weight Training: } & 25 \% \\ \text { Other: } & 11 \% \end{array}

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Construct a frequency polygon. - Weight (in pounds) Number of students 101-130 14 131-160 12 161-190 68 191-220 76 221-250 30  Construct a frequency polygon. - \begin{array}{l|c} \begin{array}{l} \text { Weight } \\ \text { (in pounds) } \end{array} & \begin{array}{l} \text { Number of } \\ \text { students } \end{array} \\ \hline 101-130 & 14 \\ 131-160 & 12 \\ 161-190 & 68 \\ 191-220 & 76 \\ 221-250 & 30 \end{array}

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Find the median. -1, 1, 25, 18, 21, 49, 36, 32

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Use this graph to answer the question. Use this graph to answer the question.   -What month in 2010 had the lowest sales? -What month in 2010 had the lowest sales?

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This double-bar graph shows the number of male (M)and female (F)athletes at a university over a four-year period. Answer the question. This double-bar graph shows the number of male (M)and female (F)athletes at a university over a four-year period. Answer the question.   -How many students were involved in athletics in 1989? -How many students were involved in athletics in 1989?

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Use this graph to answer the question. Use this graph to answer the question.   -What was the total increase in sales for the first 6 months from 2009 to 2010? -What was the total increase in sales for the first 6 months from 2009 to 2010?

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Use the graph to answer the question. -Use the graph to answer the question. -  Mike decides to buy shares of companies X and Y, which were initially selling for the same price. The changes in each stock's value over 90 days are shown in the graph above. At day 90, Mike Decides to buy more of one of the stocks. Which stock should he choose? Mike decides to buy shares of companies X and Y, which were initially selling for the same price. The changes in each stock's value over 90 days are shown in the graph above. At day 90, Mike Decides to buy more of one of the stocks. Which stock should he choose?

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Use the graph to answer the question. -Use the graph to answer the question. -  Mike decides to buy shares of companies X and Y, which were initially selling for the same price. The changes in each stock's value over 90 days are shown in the graph above. When did the two Stocks have the same value, other than when he bought them? Mike decides to buy shares of companies X and Y, which were initially selling for the same price. The changes in each stock's value over 90 days are shown in the graph above. When did the two Stocks have the same value, other than when he bought them?

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A car insurance company conducted a survey to find out how many car accidents people 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. 0 1 0 3 2 1 0 2 1 1 1 0 2 0 4 1 2 0 0 1 0 2 1 3 1 3 0 0 1 0 5 4  Construct a frequency and relative frequency distribution using classes based on a single value. \text { Construct a frequency and relative frequency distribution using classes based on a single value. }

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In a school survey, students showed these preferences for instructional materials. Answer the question. In a school survey, students showed these preferences for instructional materials. Answer the question.   -About how many students would you expect to prefer TV in a school of 650 students? -About how many students would you expect to prefer TV in a school of 650 students?

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Construct a frequency polygon. - Height (in inches) Number of employees 60-63 26 64-67 63 68-71 49 72-75 38 76-79 24  Construct a frequency polygon. - \begin{array}{l|c} \begin{array}{l} \text { Height } \\ \text { (in inches) } \end{array} & \begin{array}{c} \text { Number of } \\ \text { employees } \end{array} \\ \hline 60-63 & 26 \\ 64-67 & 63 \\ 68-71 & 49 \\ 72-75 & 38 \\ 76-79 & 24 \end{array}

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Find the median for the given sample data. -The distances traveled (in miles)to 7 different swim meets are given below: 26, 27, 32, 57, 67, 74, 88 Find the median distance traveled.

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This double-bar graph shows the number of male (M)and female (F)athletes at a university over a four-year period. Answer the question. This double-bar graph shows the number of male (M)and female (F)athletes at a university over a four-year period. Answer the question.   -What percentage of all students involved in athletics in 1989 was male? (Round to the nearest percent.) -What percentage of all students involved in athletics in 1989 was male? (Round to the nearest percent.)

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