Here’s a practice test for tomorrow –hope it helps some of you. I’ll be in my room until 3:00 today and at 7 AM tomorrow if you would like help.
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 | I know we received these in class,but here they are in the case that you have misplaced them,or wil do so in the future… Probability AP Questions There are a few of these,so start on them now and be sure to have them all completed. Sampling method refers to the way that observations are selected from a population to be in the sample for a sample survey. Population Parameter vs. Sample Statistic The reason for conducting a sample survey is to estimate the value of some attribute of a population. Population parameter. A population parameter is the true value of . . . →Read More:AP Stats –Sampling Methods
Methods of Data Collection There are four main methods of data collection. Census. A census is a study that obtains data from every member of a population. In most studies,a census is not practical,because of the cost and/or time required. Sample survey. A sample survey is a study that obtains data from . . . →Read More:AP Stats –Data Collection OK Guys –the exam is a little unpredictable sometimes,but I can tell you that there is ALWAYS AT LEAST ONE free response question that focusese exclusively on sampling and/or experimental design,as well as others that will include it as part of their focus. Consequently,there are a lot of problems to choose . . . →Read More:AP Stats –Experimental Design &Sampling AP Problems Today we started on sampling and experimental design. To introduce that,we’ll be going through this river activity that will lead the discussion. We made it through an SRS today –lok for more posts to discuss the concepts further. For now,here is the activity worksheets…
Here’s the reading guide for chapter five –pay close attention to the vocabulary. You should be able to create or name an example of each sampling and experiment technique,and tell the advantages of each,including when it should,and should not. be used. Here’s the reading guide…
We took the test on chapters 3 &4 today. Be sure to get in all the homework from chapter 4 (chapter three should have been in last quarter). If you missed the test,come on in and take it EO hour! When a table presents data for one,and only one,categorical variable,it is called a one-way table. A one-way table is the tabular equivalent of a bar chart. Like a bar chart,a one-way table displays categorical data in the form of frequency counts and/or relative frequencies. Frequency Tables When a one-way table shows . . . →Read More:AP Stats –Categorical Data When a residual plot reveals a data set to be nonlinear,it is often possible to “transform”the raw data to make it more linear. This allows us to use linear regression techniques more effectively with nonlinear data. What is a Transformation to Achieve Linearity? Transforming a variable involves using a mathematical operation . . . →Read More:AP Stats –Transformations | |||
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