) Explain why the sample midrange might be preferred to the sample mean as an estimator of the population mean.
1 answer:
Answer:
It is a good Estimator of the Population Mean because the distribution of the sample midrange is just same as the distribution of the random variable.
Step-by-step explanation: from the table,
Minimum value = 34
maximum values = 1084
The sample mid-range can be computed as:
(Min.value + max.value)/2
(34 + 1084)/2
Sample mid-range = 55
The sample midrange uses only a small portion of the data, but can be heavily affected by outliers.
It provides information about the skewness and heavy-tailedness of the distribution which is just same as the distribution of the random variable.
The nature of this distribution is not intuitive but the Central Limit in which it will approach a normal distribution for large sample size.
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Answer:
The average height of poodles in your kennel is 25.19 inches.
Step-by-step explanation:
This is a weighed average problem.
To find the weighed average, we sum each value of the set multiplied by it's weight, and then we divide by the sum of the weights.
In this problem, we have that:
Average 20.5 inches has weight 28.
Average 32.1 inches has weight 19.
What is the average height of poodles in your kennel?
The average height of poodles in your kennel is 25.19 inches.