Stat Quiz #3

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University of Alabama *

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211

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Statistics

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May 4, 2024

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docx

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1

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Introduction to Statistics Name: Emily Aplustille Quiz: Assignment #3 Using the following numbers: {5 6 4 9 11} 1. Compute the mean: 5+6+4+9+11=35 35/5= 7 The mean is 7 2. Determine the median: 4 5 6 9 11 The median is 6 3. Compute the variance (must show work) s 2 = ∑ ¿¿¿ (4-7) 2 + (5-7) 2 + (6-7) 2 + (9-7) 2 + (11-7) 2 5-1 9+4+1+4+16= 34 34/4= 8.5 Variance= 8.5 4. Calculate the standard deviation: (if you don’t have a calculator, you may leave the answer in radical form) (4-7) 2 + (5-7) 2 + (6-7) 2 + (9-7) 2 + (11-7) 2 5 34/5= 6.8 6.8 = 2.60768 5. Create the 5-number summary of the following distribution: {2 3 5 7 9 11 21 23 29 35 42} { 2 29 11 5 42} smallest 3 rd quartile median 1 st quartile largest 6. Use the formula: x fahrenheit = 32 + 1.8(Celsius) to calculate the Fahrenheit temperature for 51 C 32+ 1.8(51) = 123.8 Statistics Quiz #3
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