Ehrd 391 - Study guides, Class notes & Summaries

EHRD 391 Exam 1 Sandlin questions with correct answers Population Answer group of people that have at least 1 characteristic in common Sample Answer a subset of the population Statistic Answer summarized value of a sample Parameter Answer summarized value of a population descriptive statistics Answer organize and describe a collection of data inferential statistics Answer make generalizations

Inferential Statistics (hypothesis testing) Answer -making decisions with incomplete data -notion of taking info from small groups to big ones population Answer a group of people who have 1 thing in common sample Answer a subset of the people sampling error Answer the inherent error that comes with samples Null hypothesis Answer -a statement of equality between two variables -considered the starting point -it is what we accept to be true, until we have evidence that says othersi...

bivariate data Answer Data with two variables univariate data Answer data with one variable example of continuous variable Answer hrs studied and test score r Answer strength of associate between variables 4 things that scatter plot tells you Answer -degree of association -directionality -linearity -outliar if outliar is encountered Answer -make sure is not an administrative error -caluculate with and without the association - check what is going on Pearson's r Answer te...

Statistics Answer A set of tools and techniques that are used for describing, organizing, and interpreting information or data -Making decisions with incomplete data Data Answer A RECORD of an observation/event such as a test score, grade in class, or response time Data Set Answer A COLLECTION of observations/events such as test scores, grades on a test, or response time Branches Of Statistics Answer --- Descriptive Statistics Answer Used to organize and describe the characteristics...

bivariate Answer 2 variables r Answer -Pearson r -tells you the degree of linear relationship between two continuous variables -has to be a meaningful relationship between the variables will be making scatter plots degree of association Answer what does the circle around the data look like? -tight circle=most related -loose circle=least related directionality Answer where it is moving +/- linearity Answer no curves or randomness presence of outliers Answer 1) make sure no ou...

Probability theory Answer analysis and understanding of chance occurrences Probability Answer specification of how frequently a particular event of interest is likely to occur over a large number of trials Standard Error of the Mean Answer the standard deviation of a sampling distribution Sampling Distribution of Means Answer when samples are taken and the means are calculated and graphed Central Limit Theorem Answer - sampling distribution of the means will be normal - mean of the ...

The Null Hypothesis can be Answer Correct or Incorrect We fail to reject Ho when Answer Data is Correct or between Tc Step 1 Answer State Ho & Ha Step 2 Answer Select "Alpha" Alpha Answer Level of risk or level of significance Step 3 Answer Select Appropriate Test "Dependent or Independent" Step 4 Answer Compute T-o "Do the Math" Step 5 Answer Determine the value to reject the Null "T-c" t-critical How to solve "DF" = Degree of freedom For independent Answer n1 ...

Population Answer group of people that have at least 1 characteristic in common Sample Answer a subset of the population Statistic Answer summarized value of a sample Parameter Answer summarized value of a population descriptive statistics Answer organize and describe a collection of data inferential statistics Answer make generalizations Percentiles Answer indicate the percentage of observations that fall at or below a specific value Quartiles Answer Points in the distribut...

EHRD 391 CH 3, Questions and answers, 100% Accurate (Exam Review). VERIFIED. Kurtosis - -What is the term associated with how flat or peaked a distribution appears? Maintain the scale in the graph - -which of the following are among the things to remember when creating figures? Skewness - -This is another word for "lopsidedness" of a distribution Frequency Distribution - -When tallying and representing how often certain scores occur, which type of data illustration method is bein...