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[DOC File]Interquartile Range, Standard Deviation, Sets
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Interquartile Range (IQR) (another measure of spread) IQR = Q3 – Q1 and gives the range of the middle 50% of our observed values. Standardized Variables (z-scores) The z-score for an observation is (sample) or (population). The z-score tells us how many standard deviations above (if positive) or below (if negative) the mean an observation is.
find the value of the interquartile range

[DOC File]Notes: Finding Quartiles & Interquartile range in a Data Set
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Find Q1_____ Q3_____ IQR _____ Q1 – 1.5 ( IQR ) _____ Q3 + 1.5 ( IQR )_____ Are there any outliers? Why? (Use the IQR) 2. Although bats are not known for their eyesight, they are able to locate prey (mainly insects) by emitting high-pitched sounds and listening for echoes. The following are distances (in cm) at which a bat first detected a ...
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[DOC File]JMP TUTORIAL #1 - DESCRIPTIVE METHODS FOR …
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Find the IQR. 33 13 1 21 31. 8 3 11 2 23. 25 1 33 28 4. 17 24 22 31 . For this data set, the minimum is 1, Q1 equals 4, the median is 21, Q3 equals 28, and the maximum is 33. The interquartile range is 24. Give an example of a data set where the mean is larger than the median. ...
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3 Ways to Find the IQR - wikiHow
c.Find the interquartile range (IQR). Activity . 4 [Page 2.4] 1.Identify the following as true or false and give a reason. Use the activity to help your thinking. a.The LQ is always one of the elements of the data set. b.The LQ is the midpoint between the smallest value in the data set and the median.
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[DOCX File]Quality Review Team - Veterans Affairs
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Suppose the class took a 40-point quiz. Results show that a mean score of 30, median 32, IQR 8, standard deviation 6, min 12 and lower quartile 27. You got a 35. What happens to each of the statistics if… I decide to weight the quiz as 50 points by adding 10 points to each score. Your score is now 45. = M = IQR = s = min = Q1=
what is interquartile range

[DOC File]Exam - TCNJ
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Aug 23, 2016 · Also draw a well-labeled sketch of the standard normal curve and indicate how to find the value of the IQR on the graph. Using the “1.5IQR” rule for identifying outliers, determine what proportion of the values from a standard normal distribution would be classified as outliers. [Hint: Again draw a sketch first, and then identify the “cut ...
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[DOCX File]Weebly
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Jan 08, 2016 · QRSs are required to call S1 errors on an IQR for VSRs when any of the above have not been completed or have been completed incorrectly. 6.09 QRTs – Going Beyond the Review. Introduction. This topic contains information about QRTs going beyond the review. Change Date. December 30, 2015.
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Median and IQR
Step 2: Find the median(the number in the middle) 4, 6, 9, 10,17, 19, 21 Md = 10 . Step 3: Find the 1st or lower Quartile (median of the lower half) 4, 6, 9 so.. 1st Q = 6. Step 4: Find the 3rd or upper quartile (median of the upper half) 17, 19, 21 3rd Q = 19 . Step 5: Find the interquartile range by subtracting 3rd and 1st quartile 19-6 = 13 ...
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[DOC File]rossmanchance.com
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What is the IQR of the data? _____ cm (True/False) There is a high concentration of data in Q3. _____ What percent of the data is at least 5.5 cm? _____ Which quartile has the biggest spread of data? _____ Directions: Use the line plot given below to answer the following questions. ...
find the value of the interquartile range

How to find iqr