college
posted by Wanda
why is the population shape a concern when estimating a mean

Ms. Sue
What is your School Subject?

MathMate
If the shape of the population distribution follows the Normal curve, the mean coincides with the mode and median, and hence it's is meaningful as an indicator.
On the other hand, if it is skewed, i.e. does not follow the normal curve, other indicators may be more meaningful, depending on the "shape" of the distribution curve.
Respond to this Question
Similar Questions

Math (Statistic)
Considered the sampling distribution of a sample mean obtained by random sampling from an infinite population. This population has a distribution that is highly skewed toward the larger values. a) How is the mean of the sampling distribution … 
statistics
The scores of students on the ACT college entrance examination in a recent year had a normal distribution with a mean of 18.6 and a standard deviation of 5.9. A simple random sample of 50 students who took the exam is selected for … 
statistics
Why is the population shape a concern when estimating a mean? 
Research & Evaluation I
Why is the population shape a concern when estimating a mean? 
Statistics
An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within one year of the population mean. Assume the population of ages is normally distributed. Determine the minimum … 
Statistics
I am not sure how to even get started on this question could someone help please. A college advisor wants to estimate the mean annual income of all college students who graduated last year. It is believed that the incomes follow a … 
Statistics
You are getting ready to take a sample from a large population, and need to determine the appropriate sample size. You are estimating sales at a large chain of department stores. A previous survey from the same population found a standard … 
stastics
Salaries of 31 college graduates who took a course in college have a mean, x of 66,700 a standard deviation , o of 17,120, construct a 90% confidence interval for estimating the population mean u. 
Statistics
You are interested in estimating the mean of a population. you plan to take a random sample from the population and use the samples mean as an estimate of population mean. Assuming that the population from which you select your sample … 
Statistics
Salaries of 50 college graduates who took a statistics course in college have a mean, x of $68,200. Assuming a standard deviation, σ, of $12,279, construct a 95% confidence interval for estimating the population mean μ.