Iqr q3 q1 - Study guides, Class notes & Summaries

Sine Rule :: Cosine Rule :: Future Value :: the amount of money in the future that an amount of money today will yield, given prevailing interest rates Trapezoidal rule :: Limit of reading :: smallest unit on the measuring instrument also known as precision. Absolute error :: ½ × limit of reading (maximum value) Interquartile Range (IQR) :: the difference between the first quartile and third quartile. Q3 - Q1 standard deviation :: a measure of the spread of data about the m...

To describe categorical data... correct answer: Make a picture. Bar graphs or pie charts work well. Summarize the distribution with a table of counts or relative frequencies (percents) in each category. Compare distributions with plots side by side. Interpret Standard Deviation correct answer: Standard deviation measures spread by giving the "typical" or "average" distance that the observations (context) are away from their (context) mean. Outlier Rule correct answer: Upper Bound ...

How to describe a 1-variable distribution correct answer: SOCS + context Ways to describe the shape of a distribution (S) correct answer: Symmetric = balanced on both sides of the center Skewed right = tail (part with less stuff) is located to the right of the center Skewed left = tail is located to the left of the center When describing this part of a distribution, always use -ly words in your description (fairly, slightly, strongly, appropriately, etc.) Outlier Formula (3rd Qu...

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...

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...

Is mean resistant to outliers? correct answer: No, non-resistant Is median resistant to outliers? correct answer: Yes, resistant Is standard deviation resistant to outliers? correct answer: No, non-resistant What is included in the 5-number summary? correct answer: min, Q1, med, Q3, max IQR equation correct answer: IQR = Q3 - Q1 Which point divides the area under the density curve in half? correct answer: median Which point is the balance point of the density curve? corre...

What is needed for all Stemplots? correct answer: Key showing how to read the plot What is in the 5 number summary? correct answer: minimum, Q1, median, Q3, maximum How do you calculate IQR? correct answer: Q3-Q1 - IQR is a number, not a range What does VSCO stand for? correct answer: variability, shape, center, outliers WHAT DO YOU NEED FOR FULL POINTS? correct answer: CONTEXT "Describe the distribution" = correct answer: = VSCO + Context When describing shape without...

WGU C955 Applied Probability and Statistics Final Exam (New 2023/ 2024 Update) Questions and Verified Answers_ 100% Correct_ Graded A QUESTION what are the four graphical displays for quantitative data? Answer: dot plot, stem plot( or steam and leaf plot), box plot, and histogram QUESTION best to display the distribution of data, particularly clusters, gaps, and outliers. Most useful for smaller data sets Answer: dot plot QUESTION best to display the distr...

multimodal - ️️If a data set has more than one value with the highest frequency, that data set has more than one mode. A distribution is called bimodal if it has two clearly defined peaks (two points with very high frequency). What is the Multiple R value in a Regression Analysis? - ️️For a single variable linear regression, Multiple R, which is the square root of R², is equivalent to the absolute value of the correlation coefficient. Time series - ️️time series—a data set i...

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...