1. Below are the annual tuition charges at 8 public universities. What is the median tuition? 4429 4960 4971 5245 5546 5587 7586 7811 1.5245 2.5395.5 3.5546 4.5245.5 Countdown 10

2. Below is a back-to-back stem and leaf plot of the weights of 39 NCSU and 38 UNC football linemen. What are the values of Q 1 for NCSU and Q 3 for UNC? #NCSUstemUNC# 455002201 675230554 10620024055559 10 250511 1475202600514 1695270516 (5)765102805555(5) 1899553000290000555517 1033330055559 75431004 55513202 263351 1034 1.250, 295 2.253, 295 3.253, 290 4.245, 285 Countdown 10

3. The side-by-side box plots below show cumulative GPAs for sophomores, juniors and seniors taking an intro stats course. The student with the lowest GPA is in what class? 1.Sophomore 2.Junior 3.Senior 4.Not enough information Countdown 10

4. The side-by-side box plots below show cumulative GPAs for sophomores, juniors and seniors taking an intro stats course. Which class has the greatest IQR? 1.Sophomore 2.Junior 3.Senior 4.Not enough information Countdown 10

5. 6 people in a room have a mean age of 45; 1 person of age 40 leaves the room. What is the mean age of the 5 people still in the room? Copyright © 2009 Pearson Education, Inc.Slide 5 - 5 1.40 2.45 3.46 4.50 5.Not enough information Countdown 10

6. Which is true of the data represented in the histogram? I. The distribution is skewed to the right. II. The mean is smaller than the median. III. The skewness will cause the median to be larger than Q 3. 1.I only 2. II only 3. III only 4. II and III only 5. I, II, and III Countdown 10

7. Indicate which one of the graphs represents data with a larger standard deviation or if the two graphs have the same standard deviation. A x = 1.93B x = 2.00 1.A has a larger standard deviation than B 2.B has a larger standard deviation than A 3.Both graphs have the same standard deviation Countdown 10

8. The students in an intro business statistics class are taking course loads this semester with a mean of 16.65 credit hours and standard deviation 2.96 credit hours. Bubba is a student in the class; his course load has a z-score of z = 1.75. This means 1.Bubba is taking 1.75 more credit hours than the mean of 16.65. 2.Bubba’s credit hours are 1.75 times the mean of 16.65. 3.Bubba’s credit hours have a standard deviation of 1.75. 4.Bubba’s credit hours are 1.75 standard deviations above the mean Countdown 10

9. Summary statistics for the number of credit hours taken by students in an intro stats class are shown below: x=16.65, s=2.96, min=5, Q1=15, median=16, Q3=19, max=23. The college charges $73 per credit hour and a flat fee of $35. So if a student takes x credit hours, the tuition is $35 + $73x. What are the mean and standard deviation of the tuition paid by students in the intro stats class? 1.$1215.45, $251.08 2.$1215.45, $216.08 3.$1250.45, $216.08 4.$1250.45, $251.08 5.Not enough information Countdown 10

10. Summary statistics for the number of credit hours taken by students in an intro stats class are shown below: x=16.65, s=2.96, min=5, Q1=15, median=16, Q3=19, max=23. The college charges $73 per credit hour and a flat fee of $35. So if a student takes x credit hours, the tuition is $35 + $73x. What are the median and IQR of the tuition paid by students in the intro stats class? 1.$1168.00, $327.00 2.$1168.00, $292.00 3.$1203.00, $327.00 4.$1203.00, $292.00 5.Not enough information Countdown 10