Practice Midterm 1 Questions SP10

A has b does not have 3 18 this data set contains one

Info icon This preview shows pages 3–6. Sign up to view the full content.

View Full Document Right Arrow Icon
a. has b. does not have 3
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
18. This data set contains one brand of hot dog that is both low-calorie and low-sodium. From a statistical perspective we consider this to be an influential point. a. TRUE b. FALSE 19. Match the correlation to its corresponding scatterplot below and circle the best Scatterplot # 1 Scatterplot # 2 Scatterplot # 3 For problems 20-22. A bakery wants to see if the height of a one-layer cake (in inches) is affected by the baking temperature and the rate at which the batter is stirred. They decide to investigate the effects of combinations of two temperatures (300 degrees F and 350 degrees F) and three stirring rates (60 rpm, 90 rpm, and 120 rpm) on the height of the cake. They bake 5 cakes at each combination of baking temperature and stirring rate. 20. How many subjects are there in this experiment? 21. How many factors are there in this experiment? 22. Which of the following is a confounding variable for this experiment? a. Stirring rate b. Temperature c. Height of the cake d. None of the above RECORD ALL YOUR ANSWERS ON THE ANSWER SHEET. DO NOT SHOW YOUR WORK FOR THE MC/TF QUESTIONS. 4
Image of page 4
SHORT ANSWER PROBLEMS - 6 POINTS EACH. SHOW ALL WORK ON THE ANSWER SHEET TO GET CREDIT. CIRCLE YOUR FINAL ANSWERS ON THE ANSWER SHEET. INCLUDE PROPER UNITS. For problems 23-27. A jeweler in Singapore advertises the prices of 48 diamonds in her showroom. You record the weight of each diamond, along with the price to see whether you can predict price using weight. The line fits well, and the analysis is shown below. Weight is measured in carats (1 carat = .2 grams); price is in Singapore dollars. Descriptive Statistics: Weight, Price Total Variable Count Mean St Dev Minimum Q1 Median Q3 Maximum Weight 48 0.20417 ???? 0.12000 0.16000 0.18000 0.25000 0.35000 Price 48 500.1 213.64 223.0 336.5 428.5 661.0 1086.0 Predictor Coef SE Coef T P Constant -259.63 17.32 -14.99 0.000 Weight 3721.02 81.79 45.50 0.000 R-square: 0.91968.
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern