Iqr interquartile range Study guides, Class notes & Summaries

Knew ton Alta - Chapter 2 - Descriptive Statistics Part 2 Questions and Answers Latest Updated Find the mode of the following amounts (in thousands of dollars) in checking accounts of randomly selected people aged 20-25. 2,4,4,7,2,9,9,2,4,4,11 If we count the number of times each value appears in the list, we get the following frequency table: Note that 4 occurs 4 times, which is the greatest frequency, so 4 is the mode of the amounts (in thousands of dollars) in checking accounts of rando...

Of the following dotplots, which represents the set of data that has the greatest standard deviation? : B split in half A random sample of 374 United States pennies was collected, and the age of each penny was determined. According to the boxplot below, what is the approximate interquartile range (IQR) of the ages? graph A 8 B 10 C 16 2 | P a g e D 40 E 50 : C 16 graph The histogram above shows the number of minutes needed by 45 students to finish playing a computer ga...

1. Which of the following statistics are unaffected by a single large outlier? (More than one) * - Answer- Median, mode, Interquartile range (IQR) 2. Which of the following is most suitable for policy making based on income distribution? * - Answer- Median Because of assumed skewed distribution 3. If we study data from a population whose mean is 200 and standard deviation is 30, which of the following data points has a z-score of -3? * - Answer- 110. 4. Which of the following statist...

Is a quantitative variable always measured in numbers? - Answer-Yes Is any measurement that you record from a sample a variable? - Answer-False What is a statistic? - Answer-The measure that is taken from the whole sample as a summary of the sample Sample data skewed to the left, then longer tail is at the... - Answer-Left What is sensitive to outliers? - Answer-Median Formula to calculate standard deviation - Answer-s = sqrt(sum(x1-xbar)^2 / n-1) How to calculate degrees of fr...

Analytics is the discovery, analysis and communication of meaningful patterns in data Information Bias A prejudice in the data that results when either the respondent or the interviewer has an agenda that affects responses Ordinal Data places data into categories that are ordered by a predetermined criteria Omission Error occurs when something (for example data or survey response) is missing Interval Data is numerical data that is ordered, is equal distance apart and does not have a nat...

AFOQT Study Guide Questions with Correct Answers Types of analogies - Answer-synonym, antonym, action, function, size, degree, amount, part to whole, member to group, units of measurement, mathematical Types of numbers - Answer-natural: greater than 0 and has no decimal or fraction Whole: natural numbers and 0 Integer: positive/negative numbers and 0 Rational: can be represented as fraction or decimal , must terminate or resolve into repeating pattern Irrational: cannot be represented...

Straighterline Introduction to Statistics Questions and Answers Already Passed Four steps in the process of statistics 1. Producing Data 2. Exploratory Data Analysis 3. Probability 4. Inference Categorical variable places individuals into one of several groups Two types: nominal and ordinal Quantitative Variable represents a measurement or a count Two types: Interval and ratio Nominal Variable categorical variables where there is no natural order among the categories Ordinal...

Chapter 4: Measures of Variability Test Bank Multiple Choice 1. Numbers that describe diversity in a distribution are referred to as measures of a. central tendency. b. association. c. variability. d. standard deviation. Ans: c Learning Objective: 4-1: Explain the importance of measuring variability Cognitive Domain: Knowledge Answer Location: Measures of Variability Difficulty Level: Easy 2. Which measure of variability is used for nominal variables such as race and ethnicity...

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...

WPC 300 Practical Exam with Complete Solutions VLOOKUP cell we want to look up information for, table with information we want to pull (use absolute reference), column with the corresponding information (number of column ex. A=1), true/false **For range of numbers, they need to be in ascending order (first cell lowest value in lowest range, last cell lowest value in highest range) Which of the following statements is NOT correct based on the sample data provided? The standard d...