If it's not possible (e.g. too time consuming or expensive) to study a whole population you can make certain inferences by taking a valid, smaller sample.
Your sample mean is your estimate of the true population mean. The sample mean is usually expressed in terms of a confidence interval to indicate that there's a degree of uncertainty around the estimate.
Here is an Example :
Stratified Mean
Boys Girls Total
Year 7 128 132 260
Year 8 122 158 280
Total 250 290 540
There is a questionnaire on at a school. They want to ask 50 pupils altogether.
To work out Year 7 Boys you would do 50(128/540) or in a simpler form 128 divided by 540, then times the answer by 50. This would give you 11.851851851… but you can just round it up to 12. You want to be careful though, as if you always round up or down your total might not match your original total.
To work out Year 8 altogether you do 50(280/540) or 280 divided by 540, then times the answer by 50.
Simple as that :D
What is the sample mean?
The state opposing the estimated church from separating from the state.
"http://wiki.answers.com/Q/What_is_the_estimated_population_mean_with_a_sample_of_36_and_the_standard_deviation_of_0.03"
56 is estimated to be 60.
The mean speed of the flow of the Agulhas Current is estimated to be 0.5 to 1.4 miles per hour. The current is located in the southwest Indian Ocean.
it mean's me
Estimated.
estimated
Estimated.
The estimated mean annual wage according to the US Census Bureau as of May 2008 is, $65,130.The estimated mean annual wage according to the US Census Bureau as of May 2008 is, $65,130.The estimated mean annual wage according to the US Census Bureau as of May 2008 is, $65,130.The estimated mean annual wage according to the US Census Bureau as of May 2008 is, $65,130.The estimated mean annual wage according to the US Census Bureau as of May 2008 is, $65,130.The estimated mean annual wage according to the US Census Bureau as of May 2008 is, $65,130.
ETD is the Estimated Time of Departure, and ETA is the Estimated Time of Arrival.
Could be "Estimated Time of Departure".
Estimated Time of Arrival.
estimated time of departure ETD estimated time of arrival ETA
What is the sample mean?
Estimated net worth means the incomes or earnings or profit that can be earned as per the calculations of previous data.
In Latin 'and to'. Or estimated time of departure,