3 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 The next seven questions consist of the steps to calculate the standard deviation. Based on the above data, what is the mean (average or x bar) exam grade? [Note: answer to the tenths place (i.e., one decimal point).] Answer: Question 4 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 The next six questions consist of the steps to calculate the standard deviation. What is x - x bar for the x value of 77 (i.e., just looking at the value of 77, what is x - x bar)? [Note: answer to the tenths place (i.e., one decimal point).] Answer: Question 5 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 The next five questions consist of the steps to calculate the standard deviation. What is x - x bar squared for the x value of 77 (i.e., just looking at the value of 77, what is x - x bar squared)? [Note: answer to the hundredths place (i.e., two decimal points). Answer: Question 6 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 The next four questions consist of the steps to calculate the standard deviation. Based on the above data, what is the sum of the squared differences (the numerator in the standard deviation equation)? [Note: answer to the tenths place (i.e., one decimal point).] Answer: Question 7 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 The next three questions consist of the steps to calculate the standard deviation. Based on the above data, what is n? [Note: answer in a whole number (i.e., no decimal points).] Answer: Question 8 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 The next two questions consist of the steps to calculate the standard deviation. Based on the above data, what is n - 1 (the denominator in the standard deviation equation)? [Note: answer in a whole number (i.e., no decimal points).] Answer: Question 9 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 The next question consist of the steps to calculate the standard deviation. Based on the above data, what is is the standard deviation (i.e., the fully completed standard deviation equation)? [Note: answer by rounding to the hundredths place (i.e., two decimal points).] Answer: Question 10 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 Based on the mean and standard deviation of the above data, what value is equal to one standard deviation below the mean? [Note: answer by rounding to the hundredths place (i.e., two decimal points).] Answer: Question 11 Use the following data to answer the questions for this homework. 10 students took a statistics exam. Their grades consisted of the following scores: 80 87 92 77 65 67 80 81 98 54 Based on the mean and standard deviation of the above data, what value is equal to one standard deviation above the mean