Statistics Quiz 1

.docx

School

University of Wisconsin, Madison *

*We aren’t endorsed by this school

Course

101

Subject

Statistics

Date

Feb 20, 2024

Type

docx

Pages

2

Uploaded by EarlAardvark3984

Report
Statistics Quiz Instructions: Select the best answer for each question. Part 1: Basic Concepts 1. Which type of data consists of values that can be placed into distinct categories? o A. Numerical data o B. Categorical data o C. Continuous data o D. Discrete data 2. The middle value in an ordered data set is the: o A. Mean o B. Median o C. Mode o D. Standard deviation 3. A sampling method where each member of the population has an equal chance of being selected is called: o A. Stratified sampling o B. Convenience sampling o C. Simple random sampling o D. Cluster sampling Part 2: Calculations 4. A data set has the following values: 5, 8, 3, 6, 9. What is the standard deviation (round to two decimal places)? o A. 5.80 o B. 2.39 o C. 3.77 o D. 2.00 5. A researcher studies the relationship between hours spent studying and exam scores. They find a correlation coefficient of r= 0.85. What does this indicate? o A. No relationship exists between the variables o B. The relationship is weak and negative
o C. A strong, positive relationship exists o D. Studying always causes higher exam scores Part 3: Interpretation & Application 6. A p-value of 0.02 in a hypothesis test indicates: o A. There's a 2% chance the null hypothesis is true o B. Strong evidence exists to reject the null hypothesis o C. The result isn't statistically significant o D. The sample size was too small 7. A clothing manufacturer wants to determine the most popular shirt size among their customers. Which type of graph would be MOST appropriate to visualize this? o A. Histogram o B. Scatterplot o C. Bar chart o D. Box plot 8. A pharmaceutical company tests a new drug. To ensure the results are valid, which of the following is essential? o A. A small sample size o B. Only including one age group as participants o C. A control group receiving a placebo o D. Researcher bias during the study Answer Key 1. B 2. B 3. C 4. B 5. C 6. B 7. C 8. C
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help
Recommended textbooks for you
Text book image
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Text book image
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
SEE MORE TEXTBOOKS
Recommended textbooks for you
Text book image
Glencoe Algebra 1, Student Edition, 9780079039897...
Algebra
ISBN:9780079039897
Author:Carter
Publisher:McGraw Hill
Text book image
Big Ideas Math A Bridge To Success Algebra 1: Stu...
Algebra
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:Houghton Mifflin Harcourt
SEE MORE TEXTBOOKS