Westonci.ca is the best place to get answers to your questions, provided by a community of experienced and knowledgeable experts. Get quick and reliable answers to your questions from a dedicated community of professionals on our platform. Join our Q&A platform to connect with experts dedicated to providing accurate answers to your questions in various fields.
Sagot :
Answer: b. 30%
Step-by-step explanation:
- A measure of relative variability is known as coefficient of variation. It is the ratio of the standard deviation to the mean.
i.e. [tex]CV=\dfrac{\sigma}{\mu}[/tex]
Given: mean = [tex]\mu=90[/tex]
Variance = [tex]\sigma^2 = 729[/tex]
[tex]\sigma=\sqrt{729}=27[/tex]
Now, [tex]CV=\dfrac{27}{90}=0.3[/tex]
in percent , [tex]CV= 0.3\times100\%= 30\%[/tex]
Hence, correct option is b. 30%.
Based on the information given the coefficient of variation is b. 30%.
Coefficient of variation
Using this formula
Coefficient of variation=√Variance/Mean
Let plug in the formula
Coefficient of variation=√729/90
Coefficient of variation=27/90
Coefficient of variation=0.3×100
Coefficient of variation=30%
Inconclusion the coefficient of variation is b. 30%.
Learn more about coefficient of variation here:https://brainly.com/question/12327871
Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. We hope our answers were useful. Return anytime for more information and answers to any other questions you have. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.