Stat 503 exam Study guides, Class notes & Summaries

Statistics - ANSWER-A branch of science chiefly concerned with the collection, analysis, interpretation, and presentation of empirical data. A set of mathematical tools that help us tell stories with data and help us use data to decide which stories to trust. It is used to quantify and manage uncertainty. Variation - ANSWER-An inherent component of all living systems. Uncertainty - ANSWER-Variation and incomplete information. Sampling Error - ANSWER-The variation that we see among multi...

Stat 503 Exam Questions with Correct Answers Numeric or quantitative variables - Answer-- describe traits that are measured or counted - have magnitude and units - are either continuous or discrete - Numeric variables can be treated as categories if: -- The variable is discrete and the number of possible values is small. (e.g. number of children in a household) -- Only a few specific values are included in the data by design (e.g., three dosage levels in an experimental drug trial). Con...

STAT 503 EXAM QUESTIONS AND ANSWERS ALL CORRECT What is an outcome? - Answer-Observation of a variable What is a probability model? - Answer-A mathematical description of a random phenomenon consisting of 2 parts (sample space and way of assigning probability to event) What is the multiplication rule? (independent) - Answer-P(AB) = P(A) P(B|A) = P(B) P(A|B) What is the addition rule? (disjoint) - Answer-P(A or B) = P(A) + P(B) - P(AB) If A and B are disjoint, the must be depende...

STAT 503 Final Exam Questions and Answers

STAT 503 FINAL Exam with Verified Solutions 2024 Is a quantitative variable always measured in numbers? - Answer -Yes Is any measurement that you record from a sample a variable? - Answer -False What is a statistic? - Answer -The measure that is taken from the whole sample as a summary of the sample Sample data skewed to the left, then longer tail is at the... - Answer -Left What is sensitive to outliers? - Answer -Median Formula to calculate standard deviation - Answer -s = sqrt(sum(x1-...

Is a quantitative variable always measured in numbers? - Answer-Yes Is any measurement that you record from a sample a variable? - Answer-False What is a statistic? - Answer-The measure that is taken from the whole sample as a summary of the sample Sample data skewed to the left, then longer tail is at the... - Answer-Left What is sensitive to outliers? - Answer-Median Formula to calculate standard deviation - Answer-s = sqrt(sum(x1-xbar)^2 / n-1) How to calculate degrees of fr...

Is a quantitative variable always measured in numbers? - ANSWER-Yes Is any measurement that you record from a sample a variable? - ANSWER-False What is a statistic? - ANSWER-The measure that is taken from the whole sample as a summary of the sample Sample data skewed to the left, then longer tail is at the... - ANSWER-Left What is sensitive to outliers? - ANSWER-Median Formula to calculate standard deviation - ANSWER-s = sqrt(sum(x1-xbar)^2 / n-1) How to calculate degrees of fr...

Splunk Exam 114 Questions with Answers 2023 After running a search, what effect does clicking and dragging across the timeline? A. Executes a new search B. Filters current search results C. Moves to past or future events D. Expands the time range of the search - CORRECT ANSWER B The stats command will create a ___________ by default. A. Table B. Report C. Pie Chart - CORRECT ANSWER A When a search returns _________, you can view the results as a list. A. A list of events B....

Is a quantitative variable always measured in numbers? - ANSWER Yes Is any measurement that you record from a sample a variable? - ANSWER False What is a statistic? - ANSWER The measure that is taken from the whole sample as a summary of the sample Sample data skewed to the left, then longer tail is at the... - ANSWER Left What is sensitive to outliers? - ANSWER Median Formula to calculate standard deviation - ANSWER s = sqrt(sum(x1-xbar)^2 / n-1) How to calculate degrees of fr...