Sta 2381 exam - Study guides, Class notes & Summaries
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STA 2381 Exam |Questions with Correct Verified Answers
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Descriptive Statistics v Inferential Statistics - ANSWER Descriptive statistics describes sets of 
data. Inferential statistics draws conclusions about the sets of data based on sampling. 
Population v Variable - ANSWER A population is a set of units of interest to a study. A variable is 
a characteristic or property of the units being studied. 
Population v Sample - ANSWER A population is a set of units of interest to a study. A sample is a 
subset of the units of a population.
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STA 2381 Exam 2024|Questions with Correct Verified Answers
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T/F) The probability distribution of all the possible sample meas composed from samples of 
size n is known as the sampling distribution of the sample mean - ANSWER True 
(T/F) The standard error of the sample mean is another term for the standard deviation of the 
sample mean - ANSWER True 
(T/F) With increasing sample size the sampling distribution of the sample mean approaches 
normality, regardless of the distribution of the population from which the data is sampled - 
ANSWER True
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STA 2381 (Probability and Statistics) FORM A EXAM 2Questions with Answer Key 2023/2024 Spring Series Baylor University
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STA 2381 (Probability and Statistics) 
FORM A EXAM 2Questions with 
Answer Key 2023/2024 Spring Series 
Baylor University
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STA 2381 EXAMS BUNDLE | Questions with Correct Verified Answers
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STA 2381 EXAMS BUNDLE | Questions with Correct Verified Answers
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STA 2381 (Probability and Statistics) FORM A EXAM 2Questions with Answer Key 2023/2024 Spring Series Baylor University.
- Exam (elaborations) • 15 pages • 2024
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STA 2381 (Probability and Statistics) 
FORM A EXAM 2Questions with 
Answer Key 2023/2024 Spring Series 
Baylor University.
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STA 2381 Cumulative Exam |Questions with Correct Verified Answers
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T/F: Every estimator has a sampling distribution that is identical to the distribution of the 
population of interest - ANSWER False 
T/F: Chebychev's Theorem is used to help understand the concept of a standard deviation and 
applies to any random variable - ANSWER True 
T/F: The empirical rule is used to help understand the concept of the location of a population 
and applies only to symmetric unimodal continuous random variables - ANSWER False 
T/F: The empirical rule is used to help underst...
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STA 2381- Statistics Exam | Questions with Correct Verified Answers
- Exam (elaborations) • 12 pages • 2024
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T/F: Every estimator has a sampling distribution that is identical to the distribution of the 
population of interest - ANSWER False 
T/F: Chebychev's Theorem is used to help understand the concept of a standard deviation and 
applies to any random variable - ANSWER True 
T/F: The empirical rule is used to help understand the concept of the location of a population 
and applies only to symmetric unimodal continuous random variables - ANSWER False
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STA 2381- Probability and Statistics Exam | Questions with Correct Verified Answers
- Exam (elaborations) • 6 pages • 2024
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A _____ is a function of the population data. - ANSWER statistic 
Estimators are _____ variables. - ANSWER random 
_____ describe a population of interest, while _____ describe a sample. - ANSWER parameters; 
statistics 
What is the estimated value of x̄? - ANSWER μ (mu) 
_____ is the population standard deviation, while _____ is the sample standard deviation. - 
ANSWER σ (sigma); s
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