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Statistics Homework Week 1

Statistics Homework Week 1

 

3. If you are told only that you scored in the 80th percentile, do you know from that description exactly how it was calculated? Explain.

 

10. For the numbers 1, 2, 4, 16, compute the following: ΣX ΣX2 (ΣX)2

 

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Answer of the following Questions

 Can you provide an example of different quadratic equations which gives the same solutions? What is the general rule that allows you to see that 2 different quadratic have the same solutions?

Multiple choices

Al and Joe are two county sheriff’s deputies assigned to watch for traffic violations. Their arrest and conviction records for May and June are shown below. Who had the best conviction percentage in June? A A. Al B. Joe C. They are equal D. Cannot tell by the data

The available following data set is the GPAs of the students in a statistics class. 1.93, 1.99, 2.00, 2.04, 2.12, 2.34, 2.55, 2.55, 2.75, 2.75, 2.80, 2.80, 2.85, 3.02, 3.12, 3.22, 3.31, 3.33, 3.45, 3.69 What percentile is a GPA of 2.34? A. About the 6th B. About the 15th C. About the 30th D. About the 60th

Use the ten step "deviation method" to compute the standard deviation for the five scores below. Write a name and letter symbol for the measure in each step. Show the computations for all steps. Compute the z-scoresfor the data. Show the computations Obse

Use the ten step "deviation method" to compute the standard deviation for the five scores below. Write a name and letter symbol for the measure in each step. Show the computations for all steps. Compute the z-scoresfor the data. Show the computations Observed

Value Name X Alice 16 Beth 12 Carl 10 Dave 8 Erma 4 Sum: ΣX = 50 N = 5 Mean = 50/5 = 10 Use results from the computations to answer the 5 items below Mean = Adjusted sum of squares = Variance = Standard deviation = List the standard values of z-scores:

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