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[DOC File]Chapter 1 Review
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The interquartile range increases. The range increases. The median remains unchanged. The stem-and-leaf diagram below gives the distribution of the ages in years of 20 participants at a family reunion. Which of the following distributions are more likely to be skewed to the right than skewed to the left? Household incomes. Home prices
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[DOC File]TopicName Test - Jacaranda
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Calculate the interquartile range of both distributions. Show both distributions on a box-and-whisker plot. Ford median = 15 Holden median = 16. Ford range = 30 – 4 = 26 Holden range = 35 – 3 = 33. Ford : Lower quartile = 1.05 Upper quartile = 2.45 Interquartile range = 2.45 – 1.05 = 1.4
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[DOC File]MEDICAL DOCTORS – An Activity to review descriptive ...
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13) The interquartile range is the difference between the two quartiles and is a measure of spread because it means that the central 50% of the observations are spread over that range. Calculate the . interquartile range. or . IQR. for this data set:_____ The . range. is just the difference between the maximum and minimum value.
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[DOC File]Quiz 1 - Statistical Science
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How do you calculate the interquartile range for a data set? B. Take the highest value minus the lowest value and divide it by four. Subtract the value of the lower quartile from the upper quartile. Subtract the value of the upper quartile from the lower quartile.
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[DOCX File]www.humbleisd.net
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(e) What is the interquartile range of WISC scores for the reference population? 8.A researcher wishes to calculate the average height of patients suffering from a particular disease. From patient records, the mean was computed to be 156 cm, with a standard deviation of 5 cm.
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[DOCX File]Henry County Schools / Overview
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Calculate the mean of the absolute deviations _____ The mean absolute deviation (MAD) is ____________ Using the data set below, find the mean, median, mode, range, 1st quartile, 3rd quartile, interquartile range, and mean absolute deviation.
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[DOC File]Calculation of Inter-Quartile Range (IQR)
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The inter-quartile range is the range in which the middle 50% of the data points fall (i.e. the distance between the 1st and 3rd quartile) and would be calculated as follows for the above data set: 25% of n = 25% x (n+1) = 0.25 x 9 = 2.25. Therefore the 1st quartile lies between the 2nd and 3rd lowest observations (i.e. 3 &4).
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[DOC File]Sample Test Questions -- Test 1 - University of Florida
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B. Range= max- min. And here, the first quartile is bigger than the min, so the IQR = Q3-Q1 is smaller than the range. A. For example, N~(2, 20) is also a normal distribution. The mean can be positive, negative or zero. D. Because the variance involves squaring the deviations, it does not have the same unit of measurement as the original ...
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[DOC File]GCSE Exam Questions on Plans and Elevations
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[2 marks] (b) Find the interquartile range of the scores. [2 marks] Question 4. (AQA November 2004 Higher Paper 2 Calculator OK) The histogram below shows the test scores of 100 female students. (a) What is the median score? [1 mark] (b) What is the interquartile range? [1 …
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How to calculate interquartile range