1. If the standard deviation for a set of numbers equals 15, what is the variance for the same sample ? (a) 225 (b) 15 (c) sqrt(15) (d) 30 (e) none of these 2. For a given set of data, the value of Q1...

Extracted text: 1. If the standard deviation for a set of numbers equals 15, what is the variance for the same sample ? (a) 225 (b) 15 (c) sqrt(15) (d) 30 (e) none of these 2. For a given set of data, the value of Q1 = 50, and the value of Q3 = 80. What is the correct value for the interquartile range (IQR)? (а) 130 (b) 30 (c) 4000 (d) 1.6 (e none of these 3. For a set of data with 10 values, which statement is true ? (a) Q1 would be determined using the lowest 6 numbers. (b) Q1 would be determined using the highest 5 numbers. (c) Q3 would be determined using the highest 6 numbers. (d) Q3 would be determined using the highest 5 numbers. (e) Each of these statements is false. 4. For a set of data with 11 values, which statement is true ? (a) Q1 would be determined using the lowest 5 numbers. (b)Q1 would be determined using the highest 5 numbers. (c) Q3 would be determined using the highest 6 numbers. (d)Q3 would be determined using the highest 3 numbers. (e) Each of these statements is false. 5. Which set of values is not possible ? (a) Q1 = 50, Q2 = 60, Q3 = 80 (b) Q1 = 50, Q2 = 60, Q3 = 70 (c) Q1 = 40, Q2 = 40, Q3 = 50 (d) Q1 = 50, Q2 = 70, Q3 = 70 (e) Each of these situations is possible.