Sta 261 Study guides, Class notes & Summaries

Significance Test for One Population Proportion Assumptions Correct Answer Randomly obtained Categorical Large Sample Size (np>15, n(1-p)>15) 2 Proportions z-test/z-interval Assumptions Correct Answer Randomly obtained Categorical At Least 10 Successes and Failures Confidence Interval for 1 Population Proportion Assumptions Correct Answer Randomly Obtained np>15, n(1-p)>15 1 Proportion Plus 4 z-interval Assumptions Correct Answer Randomly obtained Not enough samples: n...

Descriptive statistics Correct Answer summarizing the data Ex. Mean, median, standard deviation, graphical displays Inferential statistics Correct Answer drawing conclusions about a population based on a sample Ex. Confidence intervals, hypothesis tests Descriptive statistics vs. Inferential statistics Correct Answer descriptive statistics can summarize the large amount of raw data, but since everything is known for the population, there is nothing to infer Population Correct Answer e...

The distinction between descriptive and inferential statistics is that: Correct Answer descriptive statistics describe data sets, inferential statistics make predictions for the populations The z-score and percentile are measures of Correct Answer relative location The sampling frame is the Correct Answer list of all elements in a population The percentage of data points falling at or below the upper quartile is Correct Answer 75 A distribution can have more than one Correct Answer m...

Probability of an outcome Correct Answer probability of a particular outcome is the proportion of times that the outcome would occur in a long run of observations Trial Correct Answer Each simulated roll of a die, or any experiment being conducted Cumulative proportion Correct Answer At each value for the number of trials, found by after a certain number of trials, divide the number of outcomes at that stage by the number of trials. Independent Correct Answer Different trials of a rando...

Test statistic Correct Answer Describes how far the point estimate of the parameter falls from the hypothesized value of the parameter value given in the null hypothesis P-value Correct Answer The probability that the test statistic equals the observed value or value even more extreme Bootstrapping Correct Answer A simulation method that treats the sample data distribution as if it were the population distribution Resampling with replacement CLT Assumptions Correct Answer 1. Randomizat...

The three main reasons for studying statistics are: Correct Answer 1. Being informed 2.Making good decisions 3. Evaluating decisions that affect you Role of ___________. In statistics, context provides ___________ Correct Answer 1. Context 2. Meaning Logic of Statistical ___________. Use "what if" reasoning that includes consideration of _______________ and _________________ Correct Answer 1. Inference 2. Uncertainty 3. Variability To learn statistics you need ___________/_____...

This is a comprehensive and detailed study guide for Exam 3 in STA 261 . U'll need it!! N.B; If this doc helped you to ace you test or exam, or if it helped you in any way, please feel free to drop a review. it means a lot. Thank you.

This is a comprehensive and detailed Exam 1 Study Guide for STA 261 It's ; * Comprehensive * Detailed and... * Concise U'll need it!! N.B; If this doc helped you to ace you test or exam, or if it helped you in any way, please feel free to drop a review. it means a lot. Thank you.

STA 261 Exam with correctly answered questions

STA 261 Exam 2 with correct answers