How to calculate q1 and q3
[DOC File]A sample mean, denoted (pronounced “x-bar”), is an average ...
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) is calculated as UF = Q3 + 1.5(Q3 – Q1). The Lower Fence (LF) is calculated as LF = Q1 – 1.5(Q3 – Q1). Q3 – Q1 is often referred to as the inner quartile range (IQR) so the fences are often noted as: UF = Q3 + 1.5IQR and LF = Q1 – 1.5 IQR. A mode. is simply the value that occurs most frequent. A set of data may have more than one ...
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The first quartile Q1 is the 25th percentile, 25 percent of the observations in a list are smaller than Q1. The second quartile, Q2 is the 50th percentile, or the median. About half the data are less than this value Q2. The third quartile, Q3 is the 75th percentile, about 75 percent of the observations are below this value Q3.
[DOCX File]Q1. - QCL Science - Home
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Q1. The diagram shows a plant cell drawn by a student. ... His teacher told him to calculate the percentage change in mass of each cube. (i) Calculate the percentage change in mass for the 1 × 1 × 1 cm cube. Show your working. (2) ... Q3. A student carries out an experiment to investigate the effect of different concentrations of a food dye ...
[DOC File]3 - Faculty Websites
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First Quartile = Q1 = median of observations that fall below the median. Third Quartile = Q3 = median of observations that fall above the median. Notes When the number of observations is odd, the middle observation is the median. This observation is not included in either of the two halves when computing Q1 and Q3.
[DOC File]CHAP 24 - IRELAND & THE GLOBAL ECONOMY
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Calculate the . Q1 Balance of trade. Q2 Balance of invisible trade. Q3 Balance of payments € 3680. € 1480. € 2280. € 2410. Q3 Trading data for 2005. Visible exports. Invisible exports. Visible imports. Invisible imports. Calculate the . Q1 Balance of trade. Q2 Balance of invisible trade. Q3 Balance of payments € 3250. € 1580. € ...
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The upper quartile, Q3, is the point below which 75% of the data is contained. To find Q1, you take the median of the data points that lie between your lowest value and Q2. To find Q3, you take the median of the data points that lie between your highest value and Q2. The upper extreme is the largest value that is less than Q3+ 1.5*(Q3-Q1).
[DOC File]MATHEMATIC WORKSHEET FOR X Grade
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Q1 = the lower quartile. Q2 = median. Q3 = the upper quartile. We can estimate Q1, Q2, Q3 from the cumulative frequency and calculate them with the formula. Median corresponds to the 50th percentile, Q1 corresponds to the 25th percentile, Q3 corresponds to the 75th, i.e. Q2 = P50 , Q1 = P25 , Q3 = P75 . By Formula (The Median = median
[DOC File]MEASURES OF CENTRAL TENDENCY
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the basis of this data, calculate the values of Q1 and Q3. 20 18 17 21 22 25 19 20 24 25 30 15 25 17 23 29 16 15 26 27 Ans Q1 = 17.25 Q3 = 25. 3. Calculate lower quartile and upper quartile from the following. X 10 11 12 13 14 15 16 17 18 F 3 4 5 12 10 7 5 2 1 Ans Q1= 13 Q3 = 15. 4.
[DOC File]The Practice of Statistics - Mrs. Krummel
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Explain how to calculate the mean,. Explain how to calculate the median, M. Explain why the median is resistant to extreme observations, but the median is nonresistant. In statistics, what is meant by spread? Explain how to calculate Q1 and Q3. What is the five-number summary? What …
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