How to calculate lower quartile
[DOC File]Percentiles & Quartiles:
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From the curve, the lower quartile = …… By formula: Lengths (mm) Frequency () The cumulative frequency 25 – 29 2 2 30 – 34 4 35 – 39 7 40 – 44 10 45 – 49 8 50 – 54 6 55 – 59 3
[DOC File]Quiz 1 - Front Page | Statistical Science
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The upper quartile for the males is 50. (c) What is the lower quartile for the male students? [1 mark] (d) Complete a possible histogram for the males on the grid above. [2 marks] Question 5. (AQA November 2006 Higher Paper 2 Calculator OK) The histogram below shows the distribution of …
Quartile - Wikipedia
Example: 1st quartile = 25th percentile. 2nd quartile = median. 3rd quartile = 75th percentile. View Figure 3-11 (text p. 153) and Figure 3-12 (text p. 154) to see how percentiles are broken up. Procedure to Compute Quartiles: Rank the data from smallest to largest. Find the median (2nd quartile).
[DOC File]MEASURES OF CENTRAL TENDENCY
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=QUARTILE(Then select the group of cells (write), and press the comma, ",". Next, enter one of the following numbers, depending on which quartile you'd like: 0 Gives the minimum value . 1 Gives the lower quartile (25th percentile) 2 Gives the median. 3 Gives the upper quartile (75th percentile) 4 Gives the maximum value
[DOC File]GCSE Exam Questions on Plans and Elevations
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What number represents the 65th percentile (what number separates the lower 65% of the distribution)? 37.31. What number represents the 90th percentile? 42.71. What is the probability of getting a raw score between 28 and 38? 57%. What is the probability of getting a raw score between 41 and 44? 9%. Scores on the SAT form a normal distribution ...
[DOC File]MATHEMATIC WORKSHEET FOR X Grade
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Calculate upper quartile and lower quartile from the following. Marks Number of students 30-35 14 35-40 16 40-45 18 45-50 23 50-55 18 55-60 8 60-65 3 Ans Q1= 38.43 Q3 = 51.11. 6. Find Q1, Q2, and Q3 from the following. Marks below 10 20 30 40 50 60 70 80 No. of students 15 35 60 84 96 127 198 250 Ans Q1 = 31.04 Q2 = 28.33 Q3 = 37.78 ...
[DOC File]Excel Basics - University of Washington
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Calculate the value of Q1 by using step (b) above. The interquartile range and quartile deviation. This measure is found in the same way as ungrouped data, i.e. Interquartile range = Q3 – Q1. Since cell G13 contains the value pertaining to Q3 and cell G14 contains the lower quartile value, the interquartile range is found: In cell G15: =G13-G14
[DOC File]Introduction - Pearson Education
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Calculate the lower quartile, upper quartile, minimum, maximum. Lower quartile=1. Upper quartile=3. Minimum=0. Maximum=8. Calculate the range, interquartile range, variance. Range=8-0=8. IQR=3-1=2. 3.3379 Calculate the coefficient of variation (CV), coefficient of skewness(CS). CV= 100(1.827/2.533)= 72.13%. CS=3(2.533-2)/1.827=0.875
[DOC File]ijobfvc
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To find the lower quartile, one finds the median of those observations falling below the location of the actual median. (When there is an odd number of observations, one does not include the actual median …
[DOC File]Topic of 5:
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Subtract the value of the lower quartile from the upper quartile. Subtract the value of the upper quartile from the lower quartile. Divide the data set into four equal parts and find the range between each of the resulting quarters.
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