The mid-quartile range is the numerical value midway between the first and third quartile. This makes it a good measure of spread for skewed distributions. The semi-interquartile range is affected very little by extreme scores. It is half the distance needed to cover half the scores. The semi-interquartile range is one-half the difference between the first and third quartiles. ![]() Statisticians sometimes also use the terms semi-interquartile range and mid-quartile range. In the above example, the lower quartile isĭata that is more than times the value of the interquartile range beyond the quartiles are called outliers. It is the difference between the upper quartile and the lower The interquartile range or is the range of the middle half of a set of data. The upper and lower quartiles can be used to find another measure of variation call the interquartile range. The median of the upper half of a set of data is the upper quartile ( The median of the lower half of a set of data is the lower quartile ( The median of a set of data separates the set in half. In a set of data, the quartiles are the values that divide the data into four equal parts. Home Interquartile, Semi-Interquartile and Mid-quartile Ranges Varsity Tutors © 2007 - 2020 All Rights Reserved Seattle, French Tutors in Atlanta, French Tutors in Phoenix, SSAT Tutors in San Diego MCAT Tutors in Atlanta, Biology Tutors in Phoenix, GRE Tutors in New York City, Biology Tutors in Dallas Fort Worth, Algebra Tutors in Houston, English Tutors in Denver, Statistics Tutors in Louis Tutoring, San Antonio Tutoring, Seattle Tutoring, Charlotte Tutoring, Virginia Beach Tutoring Subject Test in United States History Test Prep, AP Environmental Science Tutors, DAT Quantitative Reasoning Tutors, FRM Courses & Classes, Louisiana EOC Courses & Classes, Scienceįair Project Tutors, Series 39 Courses & Classes, SAT Writing and Language Courses & Classes, Actuarial Exam FM Test Prep, Primitive Art TutorsĬhicago Tutoring, Las Vegas Tutoring, Denver Tutoring, Phoenix Tutoring, Boston Tutoring, St. Insurance Courses & Classes, Actuarial Exam STAM Courses & Classes, Pre-AP Algebra Tutors, SAEE - The Special Agent Entrance Exam Courses & Classes, GMAT Courses & Classes, SAT New York Bar Exam Test Prep, MAP Test Prep, WISC V Courses & Classes, AWS Certified SysOps Administrator Courses & Classes, Applied Linguistics Tutors, AAI - Accredited Adviser in ![]() ![]() Download our free learning tools apps and test prep books TOP SUBJECTS TOP LOCATIONS Hotmath Math Homework.
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