You own an avocado grove, and you would like to predict the revenue you recieve from the recent harvest. you harvested several different siezed baskets of avocados. You estimate 900 avocados were harvested. You select one basket as a sample and count 27 avocados that would mostly likely be selected by the buyer and 9 that would be too small. Assumming that the basket is representative sample estimate the number of avocados that may be selected by the buyer and those that might not be selected.
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7th grade Math
- Thread starter lbrummund
- Start date
J
JeffM
Guest
lbrummund said:You own an avocado grove, and you would like to predict the revenue you recieve from the recent harvest. you harvested several different siezed baskets of avocados. You estimate 900 avocados were harvested. You select one basket as a sample and count 27 avocados that would mostly likely be selected by the buyer and 9 that would be too small. Assumming that the basket is representative sample estimate the number of avocados that may be selected by the buyer and those that might not be selected.
Do you know what a "representative sample" means?
What percentage of the presumed representative sample was too small?
Based on your understanding of a representative sample, what percentage of the total harvest do you predict will be too small?
So how many avocados will be selected and how many will be rejected?
Answer as many questions as you feel CONFIDENT about?
J
JeffM
Guest
A representative sample means that the sample is similar to the universe that it represents.
So, how many were in the sample.
9 in the sample were too small
27 in the sample were not too small.
36 in total were in the sample.
So what percentage of the sample were too small: (9 / 36) = 1 quarter.
BUT the sample is considered to be representative of the universe.
So one quarter of the universe are too small, and 3 quarters are not too small.
One quarter of 900 = 900 / 4 = 225.
Three quarters of 900 = (3 * 900) / 4 = (2700 / 4) = 675.
That is the answer and the reasoning, but make sure that your child understands the steps
What does a representative sample mean
What does the sample tell us
How does that translate to the universe.
So, how many were in the sample.
9 in the sample were too small
27 in the sample were not too small.
36 in total were in the sample.
So what percentage of the sample were too small: (9 / 36) = 1 quarter.
BUT the sample is considered to be representative of the universe.
So one quarter of the universe are too small, and 3 quarters are not too small.
One quarter of 900 = 900 / 4 = 225.
Three quarters of 900 = (3 * 900) / 4 = (2700 / 4) = 675.
That is the answer and the reasoning, but make sure that your child understands the steps
What does a representative sample mean
What does the sample tell us
How does that translate to the universe.