Statistical inference is the process of using
data analysis to infer properties of an underlying distribution of probability
. Inferential statistical analysis infers properties of a population, for example by testing hypotheses and deriving estimates.
What is required for statistical inference?
Statistical inference involves
hypothesis testing
(evaluating some idea about a population using a sample) and estimation (estimating the value or potential range of values of some characteristic of the population based on that of a sample).
What does statistical inference take into account quizlet?
Statistical inference is
based on sample size and variability
, which then will determine the amount of sampling error. Data analysis distills the dataset while retaining enough information so the client can mentally envision its salient characteristics. You just studied 20 terms!
What is a statistical inference quizlet?
Statistical inference is when:
The process of generalizing or drawing conclusions regarding a target population based on information obtained from sample data
.
What is the purpose of doing statistical inference?
The purpose of statistical inference is
to estimate this sample to sample variation or uncertainty
.
What are the three forms of statistical inference?
- Point Estimation.
- Interval Estimation.
- Hypothesis Testing.
What are the types of statistical inference?
- One sample hypothesis testing.
- Confidence Interval.
- Pearson Correlation.
- Bi-variate regression.
- Multi-variate regression.
- Chi-square statistics and contingency table.
- ANOVA or T-test.
Why is statistical inference so hard?
What makes statistical inference difficult to understand is that
it contains two logics that operate in opposite directions
. There is a certain logic in the construction of the inference framework, and there is another in its application.
What are the four pillars of statistical inference?
Statisticians often call this “statistical inference.” There are four main types of conclusions (inferences) that statisticians can draw from data:
significance, estimation, generalization, and causation
. In the remainder of this chapter we will focus on statistical significance.
What is statistical inference and why is it important?
Statistical inference comprises
the application of methods to analyze the sample data in order to estimate the population parameters
. … In fact, in the statistical inference process, the form of the distribution of the sample estimates is more important than the distribution of the individual values.
What is the purpose of statistical inference quizlet?
Inferential statistics does
allow us to make conclusions beyond the data we have to the population to which it was drawn
. Inference: The process of drawing conclusions about population parameters based on a sample taken from the population.
Which of the following is a reason for taking a sample rather than a census?
Reasons for taking a sample instead of a census include: …
samples are less expensive
. sample has less sampling error than a census. a census could be less accurate when non-response rate is too high.
Why do we need to use statistical inference while conducting a research?
Inferential statistics
helps to suggest explanations for a situation or phenomenon
. It allows you to draw conclusions based on extrapolations, and is in that way fundamentally different from descriptive statistics that merely summarize the data that has actually been measured.
What are the two most common types of statistical inference?
Statistical inference uses the language of probability to say how trustworthy our conclusions are. We learn two types of inference:
confidence intervals and hypothesis tests
. We construct a confidence interval when our goal is to estimate a population parameter (or a difference between population parameters).
What are the two branches of statistical inference?
There are two forms of statistical inference:
Hypothesis testing
.
Confidence interval estimation
.
What is an inference procedure?
Inference procedures based
on the assumption of a normally distributed sample statistic
are referred to as normal theory methods.
