2 of 20 1.0 Points The length of the box in the boxplot portrays the A.mean B.median C.interquartile range D.range Reset Selection Question 3 of 20 1.0 Points Which of the following are the two most commonly used measures of variability? A.Variance and median B.Variance and standard deviation C.Mean and variance D.Range and interquartile range Reset Selection Question 4 of 20 1.0 Points A pareto chart does NOT have which of the following properties? A.The frequencies are arranged from lowest to highest B.It is a bar chart C.The frequencies are arranged from highest to lowest D.It is used to represent categorical data Reset Selection Question 5 of 20 1.0 Points A time series plot is essentially a: A.diagram B.histogram C.Scatterplot D.figure Reset Selection Question 6 of 20 The mode is best described as the 1.0 Points A.same as the average B.middle observation C.50th percentile D.most frequently occurring value Reset Selection Question 9 of 20 1.0 Points A.Both students have the same score. B.The higher score cannot be determined. C.The theater major has a higher relative position than the art major. D.The art major has a higher relative position than the theater major. Reset Selection Question 10 of 20 1.0 Points A histogram that has a single peak and looks approximately the same to the left and right of the peak is called: A.proportional B.symmetric C.bimodal D.balanced Reset Selection Question 11 of 20 A scatterplot allows one to see: 1.0 Points 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 correct D.Neither (a) nor (b) is correct Reset Selection Question 12 of 20 1.0 Points The average score for a class of 30 students was 75. The 20 male students in the class averaged 70. The 10 female students in the class averaged: A.60 B.70 C.75 D.85 Reset Selection Question 14 of 20 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 are the base salaries, in thousands of dollars, of 50 chief executive officers for a sample of companies doing business with the state of Connecticut. That is, the first entry in the table below corresponds to a salary of $125,000. A copy of this data set can be found in the Excel Workbook called CEOSalaries.xls. 125 165 148 136 179 205 209 235 265 245 157 145 168 125 191 197 205 217 148 152 113 119 117 148 225 119 221 222 165 148 127 148 105 108 204 209 178 224 228 115 201 158 136 178 104 157 247 187 239 150 Find the interquartile range of the CEO salaries, in thousands of dollars, rounded to 2 decimal places. Do not use a dollar sign. Note: $177,760 should be recorded as 177.76. CEOSalaries.xls Question 15 of 20 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 are the base salaries, in thousands of dollars, of 50 chief executive officers for a sample of companies doing business with the state of Connecticut. That is, the first entry in the table below corresponds to a salary of $125,000. A copy of this data set can be found in the Excel Workbook called CEOSalaries.xls. 125 157 113 127 201 165 145 119 148 158 148 168 117 105 136 136 125 148 108 178 179 191 225 204 104 205 197 119 209 157 209 205 221 178 247 235 217 222 224 187 265 148 165 228 239 245 152 148 115 150 Find the mean of the CEO salaries, in thousands of dollars, rounded to 2 decimal places. Do not use a dollar sign. Note: $177,760 should be recorded as 177.76. CEOSalaries.xls Question 16 of 20 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 standard deviation of the data. Place your answer, rounded to two decimal places, in the blank. For example, 3.45 would be a legitimate entry. Question 18 of 20 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. Part 3 of 3 Question 19 of 20 1.0 Points The value of the standard deviation always exceeds that of the variance. True False Reset Selection Question 20 of 20 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 Reset Selection