STA 215 Chapter Notes - Chapter 2.6 - 2.11: Confidence Interval, Statistical Parameter, Statistical Inference
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Activity 2. 2- sampling: population proportion, notes, sample proportion, notes, sample size: Is a statistic- summarizes a sample: statistics change from sample to sample, statistics can be calculated from the sample, sampling distribution of sample proportions: 2. 6 inferential statistics: the concept of statistical inference. Inferential statistics connects sample to population: the process begins on the left. Some of the small circles are filled in. This represents different individuals in the population with different values: example: population is people who live in mi. Filled in is male, open is female: we want to draw conclusions. If we use the example, if we want to know what: sample is on the right. We take from the population and make a sample. proportion of all people in mi are males, we use notation . Observations from the sample implies that the population is similar: there are 2 main techniques for drawing conclusions about populations from samples; confidence intervals and hypothesis tests.
