Iqr q3 q1 - Study guides, Class notes & Summaries

Categorical Data correct answer: Assigns a unique value for each case, used to name or identify it Quantitative Data correct answer: A variable in which the numbers act as a numerical value, always have units Stem and leaf plot correct answer: Shows quantitative data values in a way that sketches the distribution of the data Ogive correct answer: a graph that represents the cumulative frequencies for the classes in a frequency distribution Histogram correct answer: Bar graphing ...

Boxplot an image that has min, Q1, median, Q3, max Histogram A graphical representation -- bars, measuring the frequency within each interval Skewed right Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right Measures of center Median, the mean (and mode) Measures of spread Range, IQR & standard deviation Standard Deviation Rule 68% of the data are within 1 standard deviation, 95% are within 2, 99.7 are within 3 standard deviations from the mean. For skewed...

UGBA 104 Midterm Exam Questions and Answers 100% Verified calculate outliers IQR method - CORRECT ANSWER-IQR below; Q1 - 1.5 * IQR IQR above; Q3 + 1.5 * IQR how to calculate percentiles - CORRECT ANSWER-percentile (L) = (n+1) * P/100 calculate z score outlier - CORRECT ANSWER-(value-mean)/SD rule of thumb for z score outlier - CORRECT ANSWER-above or below 3 SDs away which outlier method is more lenient - CORRECT ANSWER-z score, it goes further from mean than the IQR method ie the IQR...

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...

SDS 306 Homework | Questions with Verified Answers The State Education Department requires local school districts to keep these records on all students: age, race or ethnicity, days absent, current grade level, standardized test scores in reading and mathematics. What type of variable is current grade level? a. quantitative b. identifier c. categorical The State Education Department requires local school districts to keep these records on all students: age, race or ethnicity, days absent, curr...

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...

Statistics final wgu academy exam questions and answers Categorical variables that there is no natural order among the categories nominal variables Categorical variables where there is natural order among the categories (low-high) ordinal variable A measurement which makes sense to talk about the difference between values but not the ratio between values interval Quantitive variables where is makes sense to talk about the difference in ratios. (Income, weight) ratio Valu...

Statistics final wgu academy exam questions and answers Categorical variables that there is no natural order among the categories nominal variables Categorical variables where there is natural order among the categories (low-high) ordinal variable A measurement which makes sense to talk about the difference between values but not the ratio between values interval Quantitive variables where is makes sense to talk about the difference in ratios. (Income, weight) ratio Valu...

Boxplot - Answer- an image that has min, Q1, median, Q3, max Histogram - Answer- A graphical representation -- bars, measuring the frequency within each interval Skewed right - Answer- Not a symmetric distribution, the tail is on the right, i.e. extra stuff on the right Measures of center - Answer- Median, the mean (and mode) Measures of spread - Answer- Range, IQR & standard deviation Standard Deviation Rule - Answer- 68% of the data are within 1 standard deviation,

WGU C955 - Module 4: Descriptive Statistics for a Single Variable, Top Exam Questions and answers, graded A+ If 200 people are surveyed, how many claim to have had no exercise? {{ Pie chart reflecting the average number of hours exercised per week. No exercise 36%, 1 - 2 hours 28%, 3 - 4 hours 12%, 4 - 5 hours 10%, 5 - 6 hours 8%, 6 - 7 hours 4%, more than 7 hours 2%. }} a 18 b 36 c 72 d Cannot determine - -72 Determine the range for the following data set. {1,24,26,28,32,36...