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##### apu math 302 quiz 1

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Question;Question 1 of 20;1.0/ 1.0 Points;The total frequency of the data whose ogive is shown below;is approximately;A.12;B.18;C.34;D.90;Answer Key;Question 2 of 20;1.0/ 1.0 Points;The length of the box in the boxplot portrays the;A.median;B.mean;C.interquartile range;D.range;Answer Key;Question 3 of 20;1.0/ 1.0 Points;Which measure of central location is meaningful when the;data are categorical?;A.The mean;B.The mode;C.The median;D.The range;Answer Key;Question 4 of 20;1.0/ 1.0 Points;Data that arise from counts are called;A.counted data;B.nominal data;C.discrete data;D.continuous data;Answer Key;Question 5 of 20;1.0/ 1.0 Points;The median can also be described as;A.the middle;observation when the data values are arranged in ascending orde;B.the second quartile;C.the 50th percentile;D.all of the above;Answer Key;Question 6 of 20;1.0/ 1.0 Points;A scatterplot allows one to see;A.whether there is;any relationship between two variables;B.what type of;relationship there is between two variables;C.Both (a) and (b) are;D.Neither (a) nor (b);is;Answer Key;Question 7 of 20;0.0/ 1.0 Points;Suppose that a histogram of a data set is approximately;symmetric and "bell shaped". Approximately what percent of the;observations are within one standard deviation of the mean?;A.50%;B.68%;C.99.7%;In D.95%;Answer Key;Question 8 of 20;1.0/ 1.0 Points;Researchers may gain insight into the characteristics of a;population by examining a;A.replica;B.sample of the population;C.description of the;population;D.mathematical model;describing the population;Answer Key;Question 9 of 20;1.0/ 1.0 Points;The difference between the first and third quartile is;called the;A.interquartile range;B.interdependent;range;C.mid range;D.unimodal range;Answer Key;Question 10 of 20;1.0/ 1.0 Points;Boxplots are most useful for.;A.comparing the mean;to the median;B.comparing two populations graphically;C.calculating the;mean of the data;D.calculating the;median of the data;Answer Key;Question 11 of 20;0.0/ 1.0 Points;Find the z-score for each student and indicate which one has;a better relative position. An Art Major earned a grade of 46 on an exam with;f$ar{x}f$ = 50 and s = 5, A Theater;Major earned a grade of 70 on an exam with f$ar{x}f$ = 75 and s = 7.;A.Both students have the;same score.;B.The theater major;has a higher relative position than the art major.;C.The higher score;cannot be determined.;In D.The;art major has a higher relative position than the theater major.;Answer Key;Question 12 of 20;1.0/ 1.0 Points;What type of graph is the figure below?;A.ogive;B.Pareto chart;C.relative frequency;histogram;D.pictograph;Answer Key;Part 2 of 3 - 4.0/;6.0 Points;Question 13 of 20;1.0/ 1.0 Points;Accepted characters: numbers, decimal point markers (period;or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000);E" or "e" (used in scientific notation). NOTE: For;scientific notation, a period MUST be used as the decimal point marker.;Complex numbers should be in the form (a + bi) where;a" and "b" need to have explicitly stated values.;For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is;valid whereas {9i} is not.;The following data represent the number of children in a;sample of 10 families from Chicago: 4, 2, 1, 1, 5, 3, 0, 1, 0, and 2.;Compute the mean number of children. Place your answer;rounded to two decimal places, in the blank. For example, 3.45 would be a;legitimate entry. 1.90;Answer Key;Question 14 of 20;1.0/ 1.0 Points;Accepted characters: numbers, decimal point markers (period;or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000);E" or "e" (used in scientific notation). NOTE: For;scientific notation, a period MUST be used as the decimal point marker.;Complex numbers should be in the form (a + bi) where;a" and "b" need to have explicitly stated values.;For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is;valid whereas {9i} is not.;A student scored 84 points on a test where the mean score;was 79 and the standard deviation was 4. Find the student's z score, rounded to;2 decimal places, and place it in the blank.;1.25;Answer Key;Question 15 of 20;1.0/ 1.0 Points;Accepted characters: numbers, decimal point markers (period;or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000);E" or "e" (used in scientific notation). NOTE: For;scientific notation, a period MUST be used as the decimal point marker.;Complex numbers should be in the form (a + bi) where;a" and "b" need to have explicitly stated values.;For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is;valid whereas {9i} is not.;The following data represent the number of children in a;sample of 10 families from Chicago: 4, 2, 1, 1, 5, 3, 0, 1, 0, and 2.;Compute the median number of children. Place your answer;rounded to two decimal places, in the blank. For example, 3.45 would be a;legitimate entry. 1.50;Answer Key;Question 16 of 20;1.0/ 1.0 Points;Accepted characters: numbers, decimal point markers (period;or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000);E" or "e" (used in scientific notation). NOTE: For;scientific notation, a period MUST be used as the decimal point marker.;Complex numbers should be in the form (a + bi) where;a" and "b" need to have explicitly stated values.;For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is;valid whereas {9i} is not.;The histogram below represents scores achieved by 250 job;applicants on a personality profile.;The histogram below represents scores achieved by 250 job;applicants on a personality profile.;Half of the job applicants scored below what value?Place;your answer in the blank. Do not use any stray symbols. For example, 123 would;be a legitimate answer.;30;Answer Key;Question 17 of 20;0.0/ 1.0 Points;Accepted characters: numbers, decimal point markers (period;or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000);E" or "e" (used in scientific notation). NOTE: For;scientific notation, a period MUST be used as the decimal point marker.;Complex numbers should be in the form (a + bi) where;a" and "b" need to have explicitly stated values.;For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is;valid whereas {9i} is not.;The following data represent the number of children in a;sample of 10 families from Chicago: 4, 2, 1, 1, 5, 3, 0, 1, 0, and 2.;Compute the variance of the data. Place your answer, rounded;to two decimal places, in the blank. For example, 3.45 would be a legitimate;entry.;Answer Key;Question 18 of 20;0.0/ 1.0 Points;Accepted characters: numbers, decimal point markers (period;or comma), sign indicators (-), spaces (e.g., as thousands separator, 5 000);E" or "e" (used in scientific notation). NOTE: For;scientific notation, a period MUST be used as the decimal point marker.;Complex numbers should be in the form (a + bi) where;a" and "b" need to have explicitly stated values.;For example: {1+1i} is valid whereas {1+i} is not. {0+9i} is;valid whereas {9i} is not.;A sample of 150 students at a State University was taken;after the final business statistics exam to ask them whether they went partying;the weekend before the final or spent the weekend studying, and whether they;did well or poorly on the final. The following table contains the result.;Did Well on Exam Did Poorly on Exam;Studying for Exam 60 15;Went Partying 22 53;If the sample is a good representation of the population;what percentage of the students in the population should we expect to spend the;weekend studying and do poorly on the final exam? Place your answer in the blank, rounded to 2;decimal places. Do not use a percentage sign (%). For example, 44.44 would be a;legitimate answer..10;Answer Key;Part 3 of 3 - 2.0/;2.0 Points;Question 19 of 20;1.0/ 1.0 Points;Age, height, and weight are examples of numerical data.;True;False;Answer Key;Question 20 of 20;1.0/ 1.0 Points;If we draw a straight line through the points in a;scatterplot and most of the points fall close to the line, we say that there is;a strong linear relationship between the two variables.;True;False;Answer Key

Paper#61153 | Written in 18-Jul-2015

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