Median vs iqr - Study guides, Class notes & Summaries

null hypothesis (H0) - the statistical hypothesis tested by the statistical procedure; usually a hypothesis of no difference or no relationship Interquartile Range (IQR) - the difference between the first and third quartiles (middle 50% of observations) dichotomous measure - describes the presence or absence of an attribute (ex smoker/nonsmoker) nominal data - categories that vary with no natural order (ex blood types) ordinal data - categories with natural order but without clear units (e...

AP Stat - Chapters 1-4 - Multiple Choice - Cumulative Testthe following histogram represents the distribution of acceptance rates (% accepted) among 25 business schools in 1997, what % of schools have an acceptance rate above 40% - correct answer know how to read a histogram (variable vs. freq, fraction -> %) you want to use numerical summaries to describe a distribution that is strongly skewed to the left, which combination of measure of center and spread would be the best to use (mean an...

WGU C955 Exam Questions And Answers 100% Correct! median vs IQR - ANSWER-skewed data uses these for center and spread Histogram - when to use - ANSWER-Based on the shape of the distribution, uses mean + standard deviation OR median + IQR to describe center and spread - Larger data sets; shows shapes of distribution and potential outliers; ignores the individual data valuesl Histogram Skewed right - ANSWER-Not a symmetric distribution, the tail is on the right Standard Devi...

median vs IQR - Answer skewed data uses these for center and spread Histogram - when to use - Answer Based on the shape of the distribution, uses mean + standard deviation OR median + IQR to describe center and spread - Larger data sets; shows shapes of distribution and potential outliers; ignores the individual data valuesl Histogram Skewed right - Answer Not a symmetric distribution, the tail is on the right Standard Deviation Rule - Answer 68% of the data are within 1 standard...

AP Stat - Chapters 1-4 - Multiple Choice - Cumulative Testthe following histogram represents the distribution of acceptance rates (% accepted) among 25 business schools in 1997, what % of schools have an acceptance rate above 40% - correct answer know how to read a histogram (variable vs. freq, fraction -> %) you want to use numerical summaries to describe a distribution that is strongly skewed to the left, which combination of measure of center and spread would be the best to use (mean an...

What is a continuous variable? correct answer: an infinite number of values are possible Two types of continuous variables? correct answer: interval (change in units is consistent) and ratio (similar to interval, except have an absolute zero) What is a discrete variable? 2 types correct answer: dichotomous or categorical Nominal variable? correct answer: discrete variables classified into groups with no particular order (sex and mortality) Ordinal variable? correct answer: 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...

Rate of overtriage and undertriage Overtriage rates were: (1) according to an ISS < 15 was 83.2%; (2) according to ACS-COT definition was 53.7% and (3) according to the discharge rate from the ED was 47.6%. Undertriage was 5.8% considering all patients transported to Papa Giovanni XXIII Hospital for the mechanism of trauma (median ISS 8, Interquartile Range, IR 4–9) and 1% considering patients with ISS > 15 (median ISS 17, IR 16–25). Characteristics of TTA prompted only b...

median vs IQR skewed data uses these for center and spread Histogram - when to use Based on the shape of the distribution, uses mean + standard deviation OR median + IQR to describe center and spread - Larger data sets; shows shapes of distribution and potential outliers; ignores the individual data valuesl Histogram Skewed right Not a symmetric distribution, the tail is on the right Standard Deviation Rule 68% of the data are within 1 standard deviation, 95% are...

Lurking Variable - correct answer Associated with the explanatory and the response variables that is not directly being studied. Simpson's Paradox - correct answer Occurs when a trend or result that appears in groups of data disappears when we combine the data. Regression Analysis - correct answer A process for estimating and analyzing the relationsh...