In a lottery, numbered b***s from 1 through 69 are placed into a spinning drum. Every 10 seconds a ball rolls down a tube to become one of the eight numbers to be drawn. At the end of the draw, the remaining 61 b***s have an equally likely chance of becoming the bonus number. What is the name of this method of sampling?
A. Systematic random sampling
B. Simple random sampling
C. Stratified random sampling
D. Convenience sampling
+23251 In systematic random sampling, you randomly choose a starting point and then choose every nth number; for instance, you start with the 5th number and choose every following 8th number: 5, 13, 21, ...
In simple random sampling, you choose each number randomly.
In stratified random sampling, you divide the data into groups and then randomly choose an element (or elements) from each group. For instance, you could divide the data into groups of 1-9, 10-19, 20-29, etc. and then randomly choose one number from each group.
In convenience sampling, you simply use the data that is at hand. I find it hard to figure a way to use these numbers in convenience sampling. An example of convenience sampling for determining the most popular flavor of ice cream would be to simply sample your prob/stat class.
This is an example of simple random sampling.
+23251 In systematic random sampling, you randomly choose a starting point and then choose every nth number; for instance, you start with the 5th number and choose every following 8th number: 5, 13, 21, ...
In simple random sampling, you choose each number randomly.
In stratified random sampling, you divide the data into groups and then randomly choose an element (or elements) from each group. For instance, you could divide the data into groups of 1-9, 10-19, 20-29, etc. and then randomly choose one number from each group.
In convenience sampling, you simply use the data that is at hand. I find it hard to figure a way to use these numbers in convenience sampling. An example of convenience sampling for determining the most popular flavor of ice cream would be to simply sample your prob/stat class.
This is an example of simple random sampling.
