Multistage sampling - Study guides, Class notes & Summaries

AP Statistics-Sampling Review Test Questions 2024. SRS - correct answer -unbiased, each unit has the same chance of being chosen -independent-selection of one unit has no influence on the selection of other units -all possible samples of n objects are equally likely Stratified random sample - correct answer -you know something about the population ahead of time -divide the population into homogeneous groups (Strata) -take an SRS from each Strata Cluster Sampling - correct answer -Popu...

Two amateur gardeners are interested in comparing the yields of two varieties of tomatoes. They each have small backyard gardens. Each gardener is going to plant three plants of each variety in his garden. The first gardener will select six small areas in his garden for planting, then choose three of these at random for the three plants of the first variety and then use the remaining three for the second variety. The second gardener will follow the same procedure with his own randomization in hi...

SRS - correct answer -unbiased, each unit has the same chance of being chosen -independent-selection of one unit has no influence on the selection of other units -all possible samples of n objects are equally likely Stratified random sample - correct answer -you know something about the population ahead of time -divide the population into homogeneous groups (Strata) -take an SRS from each Strata Cluster Sampling - correct answer -Population is grouped together in clusters -Take an SRS...

What is a control variable? - answer-Used to ensure the results of the study are due to the independent variable, not to another source (used to eliminate unwanted influences) What is noise? - answer-all the variables that may create misleading results (ex. abstract answers to open ended questions, people unknowingly providing false information) Measurement - answer-When a researcher assigns numerals to objects, events, or properties according to certain rules Numerical (no implicit qua...

IDS 270 Practice Exam | 2024 Questions & Answers | 100% Correct | Verified a telephone survey research company is not able to get a woman to answer questions about local traffic conditions because she is busy baking cookies - nonresponse bias a student polls his friends to get data regarding grades at his university and represents his findings as being representative of all students at that university - convient sample a certain IDS 270 instructor does not answer questions about his dr...

Observational study - observes individuals and measures variables of interest but does not attempt to influence the responses NO TREATMENT IMPOSED Comparative Observational Studies: - Case-Control Study - Cohort Study Case-Control Study - random sample of individuals with a condition (the cases) is compared with a random sample of individuals without the condition (the controls) retrospective approach: memories are not always accurate, bias may be a confounding variable hist...

STRAIGHTERLINE INTRODUCTION TO STATISTICS (BRAND NEW) ACTUAL EXAM|STRAIGHTERLINE INTRODUCTION TO STATISTICS VERIFIED EXAM QUESTIONS WITH DETAILED CORRECT ANSWERS ALL RATED A+|GUARANTEED SUCCESS|LATEST UPDATE | Four steps in the process of statistics - ANSWER-1. Producing Data 2. Exploratory Data Analysis 3. Probability 4. Inference Categorical variable - ANSWER-places individuals into one of several groups Two types: nominal and ordinal Quantitative Variable - ANSWER-repre...

CCJ 4700 Exam Study Guide Latest Update Dependent Variable - Answer-the variable assume to depend on or be caused by another variable (IV). If you find that sentence length is partly a function of the number of prior arrests, then sentence length is being treated as a dependent variable. Experimental Group - Answer-in experimentation, a group of subjects who are exposed to an experimental stimulus. Subjects in the experimental group are normally compared with subjects in a control group t...

389 G L O S S A R Y A Action research: A research strategy aimed at initiatingchange processes, with an incremental focus, for narrowingthe gap between the desired and actual states. Alternate hyp othesis: An educated conjecture that setsthe parameters one expects to find. The alternate hypothesisis tested to see whether or not the null is to be rejected. Ambiguous questions: Questionsthatare notclearlywordedand are likely tobe interpreted byrespondentsindifferent ways. ANOVA: Stands for analysi...

Research Methodology Multiple Choice Questions (MCQ) TEST BANK 2022/2023 UPDATED WITH CORRECT ANSWER KEYS Q1 Which of the following is not an essential element of report writing? a. Research Methodology b. Reference c. Conclusion d. None of these Q2 Testing hypothesis is a a. Inferential statistics b. Descriptive statistics c. Data preparation d. Data analysis Q3 Is it possible to apply projective techniques for exploratory investigation? a. Yes b. No Q4 What is the purpos...