Stat 503 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...

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...

____________ is an inherent component of all living systems - ANSWER-Variation Variation + incomplete info = __________ - ANSWER-Uncertainty ____________ is the process of inferring an unknown quantity of a population using sample data - ANSWER-Estimation What is the only way to avoid sampling error? - ANSWER-Census When do we consider a result to be repeatable? - ANSWER-If the variation among the replicates of the study is too small to change our basic interpretation of those result...

Normal distribution - ANSWER-- Symmetrical distribution - Works well for data that is subject to variation from a lot of different factors -Values in the middle are most common while tail values are extreme and rare -Numeric, continuous variables -N ~ (mu, sigma) Standard normal distribution - ANSWER-A normal distribution with a mean of 0 and a standard deviation of 1. Binomial distribution - ANSWER-- describes the number of "successes" that occur in a fixed number of independent tri...

Sample unit - ANSWER-an individual observation of the system or phenomenon that we are studying. Variable - ANSWER-a trait or characteristic of a sample unit that we observe or measure when we collect data. Wide-format dataset - ANSWER-repeated observations of the same individual appear in multiple columns. Long-format dataset - ANSWER-have only one column for each variable. continuous variable - ANSWER-variables include rates and measurements. In theory, their units can be measured ...

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-...

Splunk Questions and Answers Graded A+ 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 B The stats command will create a ___________ by default. A. Table B. Report C. Pie Chart A Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen ...

The FDA regulates the introduction of new drugs and enforces U.S. drug laws. True Pharma companies must submit extensive data to the FDA demonstrating the safety and effectiveness of new drugs before receiving approval for sale. True Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:06 / 0:15 Full screen Average review time for a new drug 18 months Sales Team Pg 7 The "engine of innovation," focused on disco...