C784 FINAL EXAM REVIEW TEST ALL QUESTIONS WITH ACCURATE & VERIFIED ANSWERS

C784 FINAL EXAM REVIEW TEST ALL QUESTIONS WITH ACCURATE & VERIFIED ANSWERS • Adult diastolic blood pressures are normally distributed. The mean is 65.3 mm Hg and the standard deviation is 11.3 mm Hg. What values would 95%95% of the data fall between? The answer is c. Use the Empirical Rule to determine that 95%95% of the diastolic blood pressure values will be within two standard deviations of the mean. Therefore, the upper limit will be: 65.3+2(11.3) =65.3+22.6=87.965.3+2(11.3) =65.3+22.6=87.9 And the lower limit will be: 65.3−2(11.3)=65.3−22.6=42.765.3-2(11.3)=65.3-22.6=42.7 Therefore, 95%95% of the diastolic blood pressures will be between 42.742.7 mm Hg and 87.987.9 mm Hg. a) 47.2 and 89.7 b) 42.2 and 86.9 c) 42.7 and 87.9 d) 41.6 and 86.8 3) Assuming that adult diastolic blood pressures are normally distributed, what is the approximate percentage of adults who have diastolic blood pressures within 11 standard deviation of the mean, or between 54.0mm Hg and 76.6 mm Hg?The answer is d. The range is the difference between the smallest and greatest values (maximum and minimum) of a data set. The minimum value is 48; the maximum is 84. 84 -48 = 36 a) 50% b) 68% c) 95.4% d) 99.7% 4) What is the range of the following data set? The answer is d. The range is the difference between the smallest and greatest values (maximum and minimum) of a data set. The minimum value is 48; the maximum is 84. 84 -48 = 36 a) 26 b) 28 c) 32 d) 36 5) What is the mean of the following data set? The answer is a. To find the mean, the first step is to add all of the values together. Then divide that sum (784) by the number of values in the data set (12) . 78/412=65.3 a) 65.3 b) 69.2 c) 61.6 d) 64.4 6) What is second quartile (Q2Q2) of this data set? The answer is c. As there are an even number of data points in this data set, the median is half-way between 125 and 125. Therefore, the second quartile (Q2), also called the median, =125. a) 123 b) 124 c) 125 d) 125.5 7) What is the first quartile (Q1Q1) of this data set? The answer is d. Find the median, or mid-point, of the data set: | | To find the first quartile (Q1Q1) identify the median of the lower half of the data set: | | | | The median of the lower half of the data set falls between 100100 and 105105. Therefore the first quartile (Q1Q1) =(100+105)2=102.5 a) 100 b) 103.5 c) 105 d) 102.5 8) What is the third quartile (Q3) of this data set? The answer is b. Find the median, or mid-point, of the data set: | | To find the third quartile (Q3Q3) identify the median of the upper half of the data set: | | | | The median of the upper half of the data set falls between 152152 and 159159. Therefore the third quartile(Q3Q3)=(152+159)2=155.5=(152+159)2=155.5 a) 152 b) 155.5 c) 157 d) 159 9) Which of the following would be the best option to graphically display continuous data? The answer is b. A histogram is a graph that displays continuous data. Histograms measure how continuous data is distributed over various ranges a) Bar Chart b) Histogram c) Pie Chart d) Box Plot 10) Which of the following is defined as data that represents values that can be counted or measured? The answer is d. Quantitative data consists of data values that are numbers, representing quantities that can be counted or measured. a) Descriptive data b) Qualitative data c) Categorical data d) Quantitative data 11) A data point that is significantly distant from the other data points in the data set is called: The answer is b. An outlier is a data point that is significantly distant from other data points in the data set. a) An anomaly b) An outlier c) An outsider d) An original 12) About 95 percent of results in a normal distribution fall between one standard deviation below the mean and one standard deviation above the mean. True or False? The answer is b. This is a false statement. According to The Empirical Rule, approximately 68% of the data points in a dataset will be within 11 standard deviation of the mean. 95% of all values are within 2 standard deviations of the mean. a) True b) False 13) Identify the most significant mistake with the graph? The correct answer is b. There is no vertical scale. a) Should have more years between 2008 and 2018. b) No vertical scale. c) Different colors should be used.