Scattered diagrams-linear correlation

Reference no: EM1395437

The following data are based on information from Domestic affairs. Let X be the average number of employees in a group helh insurance plan, and let Y be the average administrative cost as a percentage of claims.

X: 3, 7, 15, 35, 75
Y: 40, 35, 30, 25, 18

a) Make a scatter diagram and draw the line you think best fits the data.

b) Would you say the correlation is low, moderate, or strong? Positive or negative?

c) Use a calculator to verify that Ex = 135. Ex^2 = 7133, Ey = 148, Ey^2 4674, and Exy = 3040. Compare r. As x increases, does the value of r imply that y should tend to increase or decrease? Explain.

Reference no: EM1395437

Questions Cloud

Which type of progeny will be produced : Which type(s) of progeny will be produced when ovules from a green four o'clock plant are fertilized with pollen from a variegated plant.

Correlation-causation and lurking variables : Over the past decade, there has been a strong positive correlation between teachers salaries and prescription drug cost.

Determine relationship of sizes to the normal alleles band : Lane one (normal control) has a band at 4400 bp and lane two (cells from cheek) has bands at 4400 bp, 3300 bp, and 1400 bp.

Would you say that the radish has a broad ph tolerance : According to your results would you say that the radish has a broad pH tolerance? Why or why not? Use your data to support your answer.

Scattered diagrams-linear correlation : The following data are based on information from Domestic affairs. Let X be the average number of employees in a group helh insurance plan, and let Y be the average administrative cost as a percentage of claims.

How do you figure out a successful drug : In a pharmaceutical company and you are given the task of prioritizing bacteria loci to target in a drug development program. How do you figure out a successful drug is one with the highest expectation for killing all the bacteria that infect a pa..

What is most important evolutionary force : What is most important evolutionary force acting between this generation and the next affecting the genetic composition of the populations?

How dna mutation leads to manifestation of the disease : How the DNA mutation leads to the manifestation of the disease. Can the mutated DNA be removed in order to cure the disease? Why or why not?

What is the frequency of heterozygotes : What is the frequency of heterozygotes Aa in a randomly mating population in which the frequency of all dominant phenotypes is 0.19? The answer key says it 0.18. Can someone please explain why.

User Account

All Pages