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Based on the following calculator output, determine the inter-quartile range of the dataset.

{:[" 1-Var-Stats "],[ bar(x)=244.857142857],[Sigma x=1714],[Sigmax^(2)=421554],[Sx=17.6486880667],[sigma x=16.3395101468],[n=7],[minX=220],[Q_(1)=232],[Med^(2)=240],[Q_(3)=265],[maxX=269]:}
Answer:

Based on the following calculator output, determine the inter-quartile range of the dataset.\newline 1-Var-Stats xˉ=244.857142857Σx=1714Σx2=421554Sx=17.6486880667σx=16.3395101468n=7minX=220Q1=232Med2=240Q3=265maxX=269 \begin{array}{l} \text { 1-Var-Stats } \\ \bar{x}=244.857142857 \\ \Sigma x=1714 \\ \Sigma x^{2}=421554 \\ S x=17.6486880667 \\ \sigma x=16.3395101468 \\ n=7 \\ \operatorname{minX}=220 \\ \mathrm{Q}_{1}=232 \\ \mathrm{Med}^{2}=240 \\ \mathrm{Q}_{3}=265 \\ \operatorname{maxX}=269 \end{array} \newlineAnswer:

Full solution

Q. Based on the following calculator output, determine the inter-quartile range of the dataset.\newline 1-Var-Stats xˉ=244.857142857Σx=1714Σx2=421554Sx=17.6486880667σx=16.3395101468n=7minX=220Q1=232Med2=240Q3=265maxX=269 \begin{array}{l} \text { 1-Var-Stats } \\ \bar{x}=244.857142857 \\ \Sigma x=1714 \\ \Sigma x^{2}=421554 \\ S x=17.6486880667 \\ \sigma x=16.3395101468 \\ n=7 \\ \operatorname{minX}=220 \\ \mathrm{Q}_{1}=232 \\ \mathrm{Med}^{2}=240 \\ \mathrm{Q}_{3}=265 \\ \operatorname{maxX}=269 \end{array} \newlineAnswer:
  1. Understand IQR Definition: Understand what the inter-quartile range (IQR) is.\newlineThe IQR is the difference between the third quartile (Q3Q_3) and the first quartile (Q1Q_1) of a dataset. It measures the spread of the middle 50%50\% of the data.
  2. Identify Q11 and Q33: Identify the first quartile ( extit{Q11}) and the third quartile ( extit{Q33}) from the calculator output.\newlineAccording to the calculator output, extit{Q11} is 232232 and extit{Q33} is 265265.
  3. Calculate IQR: Calculate the inter-quartile range (IQR) using the values of Q1Q1 and Q3Q3. \newlineIQR=Q3Q1IQR = Q3 - Q1\newlineIQR=265232IQR = 265 - 232\newlineIQR=33IQR = 33