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School

Humber College *

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Course

RAPP5004

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Statistics

Date

Feb 20, 2024

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pdf

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Uploaded by CountScience10089

Course Messages Forums Calendar Gradebook Log Out Review Assessment Attempts Gupta, Suryansh Quiz 1 - Definitions and Terms Started: 1/16/23, 3:12 pm Last Changed: 1/19/23, 4:18 pm Total time questions were on-screen (all attempts): 98.7 minutes Due Date: Mon 1/23/23, 11:59 pm Score in Gradebook: 25/25 Grade is calculated on the best assessment attempt (Attempt 2) Show End Message Show Intro and Between-Question Text You are in the gradebook. You cannot edit answers or submit questions from here. Question 1. Score: 1/1 Score: 1/1 Time spent on this version: 0.5 minutes. Message instructor Question 2. Score: 1/1 Score: 1/1 Time spent on this version: 4.7 minutes. Message instructor Question 3. Score: 1/1 Score: 0.5/0.5 0.5/0.5 Time spent on this version: 0.3 minutes. Had help available: Video Video Message instructor Question 4. Score: 1/1 Score: 1/1 Time spent on this version: 0.8 minutes. Message instructor Question 5. Score: 2/2 Score: 0.5/0.5 0.5/0.5 0.5/0.5 0.5/0.5 Time spent on this version: 4.1 minutes. Message instructor Question 6. Score: 3/3 Score: 3/3 Time spent on this version: 11.2 minutes. Had help available: Video Message instructor Question 7. Score: 1/1 Score: 1/1 Time spent on this version: 0.9 minutes. Had help available: Video Message instructor Question 8. Score: 1/1 Score: 1/1 Time spent on this version: 0.2 minutes. Message instructor Attempt 2. Score: 25/25 . Submitted 1/19/23, 4:18 pm Define "statistics." Statistics is how to best use numbers to persuade others Statistics is the study of how to best read tables and graphs Statistics is the study of how to best collect, analyze, and draw conclusions from data. Statistics is the study of how to best understand numbers. The process of collecting data from a sample is referred to as descriptive statistics variable derivation survey inferential statistics census experiment A political scientist surveys 39 of the current 91 representatives in a state's legislature. What is the size of the sample: 39 What is the size of the population: 91 A measurement that describes a sample is called a deterministic parameter discrete statistic constant none of the other choices Determine whether the stated value is a parameter or statistic: a) 42% take public transit in a random selection of 73 students. b) In a sample of students who passed statistics, 70% used statistics in their future careers. c) A hospital recently surveyed all their patients and found that 85% were satisfied with their level of care. d) Facebook found that the mean amount of time all users spent on the site is 80 minutes each day. Statistic Statistic Parameter Parameter the percentage of 50 customer receipts that were paid for with cash whether or not it was paid for with cash 50 customer receipts all customer receipts the percentage of all customer receipts that were paid for with cash a customer receipt a. individual b. variable c. statistic d. population e. parameter f. sample A restaurant wants to estimate the percentage of customers who pay cash. They look at a sample of 50 customer receipts from the week. Match the following: c b f d e a In a study, the data you collect is Temperature in Celsius. This data is: Quantitative Qualitative Is this value from a discrete or continuous data set. Your height in centimeters Discrete Continuous

Question 9. Score: 1/1 Score: 1/1 Time spent on this version: 3.7 minutes. Message instructor Question 10. Score: 1/1 Score: 1/1 Time spent on this version: 1.8 minutes. Message instructor Question 11. Score: 6/6 Score: 0.75/0.75 0.75/0.75 0.75/0.75 0.75/0.75 0.75/0.75 0.75/0.75 0.75/0.75 0.75/0.75 Time spent on this version: 2.7 minutes. Message instructor Question 12. Score: 1/1 Score: 1/1 Time spent on this version: 0.4 minutes. Message instructor Question 13. Score: 1/1 Score: 1/1 Time spent on this version: 0.2 minutes. Message instructor Question 14. Score: 1/1 Score: 1/1 Time spent on this version: 0.1 minutes. Message instructor Question 15. Score: 3/3 Score: 3/3 Time spent on this version: 10.2 minutes. Show all tries Had help available: Video Message instructor Return to Gradebook Determine whether the variable given is qualitative, quantitative-discrete, or quantitative-continuous. number of doctor visits in the last year qualitative since this variable would yield categories quantitative-continuous since this variable would yield numbers that measure qualitative since this variable would yield numbers quantitative-discrete since this variable would yield numbers that count quantitative-continuous since this variable would yield numbers that count quantitative-discrete since this variable would yield numbers that measure In a study, the data you collect is Habits on a Always/Sometimes/Never scale. What is the level of measurement? nominal ordinal interval ratio 1) In each study, the data collected is what level of measurement? a) Letter grade (A,B,C,D,F): b) Temperature in Celsius: c) Number of traffic tickets: d) Agreeableness rating on a Strongly Disagree/Disagree/Neither Disagree nor Agree/Agree/Strongly Agree scale: e) Marital Status: 2) Are the following variables discrete or continuous? a) A person's age: b) The number of cars served at a fast food drive-thru: c) The weight of an elephant: ordinal interval ratio ordinal nominal continuous discrete continuous In a study, the data you collect are Age in years. What is the level of measurement? nominal ordinal interval ratio In a study, the sample is chosen by pulling 50 names from a hat What is the sampling method? Simple Random Systematic Stratified Cluster Convenience In a study, the sample is chosen by asking our 40 closest friends What is the sampling method? Simple Random Systematic Stratified Cluster Convenience The campus lists all of the students. They then collect data on whether or not the student is taking summer classes for randomly selected students. The campus divides the students based on age group, and then collects data on whether or not the student is taking summer classes of randomly selected students from each age group. Someone on campus collects data on whether or not the student is taking summer classes by asking 30 students as they enter the lecture hall. The campus lists all of the students and then collects data on whether or not the student is taking summer classes for every 50th student on the list. The campus randomly selects 50 classes and then collects data on whether or not the student is taking summer classes in just those classes. a. simple random sample b. stratified sample c. cluster sample d. convenience sample e. systematic sample Match each of the following to the type of sampling technique used: a b d e c

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