Study guides, Class notes & Summaries

Statistics Exam Questions With 100% Correct Answers 35 - answerWhat is the IQR (Q3-Q1) for this data set: 52, 72, 96, 21, 58, 40, 75? 40 - answerWhat is Q1 for this data set: 52, 72, 96, 21, 58, 40, 75? 75 - answerWhat is Q3 for this data set: 52, 72, 96, 21, 58, 40, 75? 58 - answerWhat is the median for this data set: 52, 72, 96, 21, 58, 40, 75? 4 - answerWhat is the IQR (Q3-Q1) for this data set: 20, 21, 18, 17, 20, 15, 56? 17 - answerWhat is Q1 for this data set: 20, 21, 18, 17, 20, 15...

Statistics Summary Ch 4 Exam With Complete Solutions Mean - answerThe arithmetic average of a data set. Most common measure of central location. To calculate the mean - answerAdd up all the values in the data set and then divide by the number of observations. Notation - answerseries or system of written symbols used to represent numbers, amounts, or elements in something such as music or mathematics. Numerical summaries of shape are - answernot covered because they are seldom used in pr...

Intro to Summary Statistics Exam With Complete Solutions summary statistics - answercollection, evaluation, and interpretation of data, statistical analysis of measurements can verify the quality of a design process central tendency - answermean, median, mode Variation - answerspread of values around the center range, standard deviation, IOR - answerexamples of variation distribution - answersummary of the frequency of values frequency tables, histograms, normal distribution - answerexam...

Summary statistics Exam Questions With 100% Correct Answers Summary statistics - answer- The first thing you want to do in Data analysis - describe data sets or relationships between variables with one or a few numbers: - What is the central value? - How widely are values spread from the center? - Are there data that are very atypical? - Are variables related? Why central tendency? - answer- You can't report the 1000 values to your boss! - Describe a whole set of data with a single val...

STA2023: Summary Statistics Exam Questions And Answers ( Verified And Updated ) A number that arises from a set or sample of data is a what? - answerStatistic R = range = ? - answermax - min IQR = Interquartile Range = ? - answerQ3 - Q1 Lower Fence = ? - answerQ1 - (1.5 * IQR) Upper Fence = ? - answerQ3 + (1.5 * IQR) x-bar = ? - answerAverage/mean Σx = ? - answerTotal value Σx^2 = ? - answerTotal squares Sx = ? - answerSample standard deviation σx = ? - answerPopulation standard d...

STA 2023: Lecture 3 Summary Statistics Exam Questions And Answers ( Verified And Updated ) objectives of summary statistics - answer-measuring center: mean and median -measuring spread: Quartiles -measuring spread: standard deviation -choosing measures of center and spread mean (arithmetic average) - answerthe most common measure of center -to find, add the values and divide by the number of observations -cannot resist the influence of extreme observations (add values and divide by the...

Summary Statistics Exam Questions And Answers ( Verified And Updated ) Standard Deviation - answerThe average distance that each value in a data set is away from the mean Variance - answerAverage squared deviations from the mean Range - answerThe difference between the maximum value and the minimum value of a data set What does a low standard deviation indicate about a data set as opposed to a high standard deviation? - answerA low standard deviation indicates the values in a data set te...

Summary Statistics ch 4 Exam Questions And Answers ( Verified And Updated ) What are three main measures of central location? - answer1) Mean 2) Median 3) Mode What is a mean? - answerthe gravitational center of the distribution What is a mode? - answerthe most frequently occurring value in the data ==> usually only used in large data sets with many repeating values What is the median? - answerthe central value in the order array of the data Describe the notation for: 1) sample size...

Summary Statistics Exam Questions And Answers ( Verified And Updated ) mean - answerThe arithmetic average of a data set is the: adding all values, dividing by the number of values - answerMean is calculated by: sample size - answerIn statistics, n designates: susceptibility to skew - answerA major failing of the mean in describing a data set is its: median - answerThe midpoint of a distribution is the: mode - answerThe most frequently occurring value in the data set is: unimodal - answe...