Week 2, Lecture 2, Measures of variability
... • There are several factors to consider when making our choice of measure of central tendency. • The mean is generally our first selection. • However, there are circumstances when the median is better. ...
... • There are several factors to consider when making our choice of measure of central tendency. • The mean is generally our first selection. • However, there are circumstances when the median is better. ...
Probability1 - Rossman/Chance
... 5. The theoretical standard deviation of this X distribution is σ/ n = 0.9/ 4 = 0.45 ounces (which should be close to most students’ L5 standard deviation) 6. No, we cannot apply the Central Limit Theorem to this example. The sample size is just n = 4, and the Central Limit Theorem only applies to X ...
... 5. The theoretical standard deviation of this X distribution is σ/ n = 0.9/ 4 = 0.45 ounces (which should be close to most students’ L5 standard deviation) 6. No, we cannot apply the Central Limit Theorem to this example. The sample size is just n = 4, and the Central Limit Theorem only applies to X ...
MAT 220 Class Notes
... Descriptive Statistics: deals with procedures used to summarize the information contained in a set of measurements. Inferential Statistics: deals with procedures used to make inferences (predictions) about a population parameter from information contained in a sample. Elements of a statistical probl ...
... Descriptive Statistics: deals with procedures used to summarize the information contained in a set of measurements. Inferential Statistics: deals with procedures used to make inferences (predictions) about a population parameter from information contained in a sample. Elements of a statistical probl ...
Descriptive analysis of quantitative data
... skill for researchers and scientists. Appropriate figures are useful as they can be read quickly, and are particularly helpful when presenting information to an audience. In addition, plotting data is an extremely useful first stage to any analysis, as this could show extreme observations (outliers) ...
... skill for researchers and scientists. Appropriate figures are useful as they can be read quickly, and are particularly helpful when presenting information to an audience. In addition, plotting data is an extremely useful first stage to any analysis, as this could show extreme observations (outliers) ...
Analysis and Presentation of Behavioral Data
... population. For example, I would much rather know the mean number of errors made by a population of older adults than the mean number of errors made by a sample of 5 older adults. This is because I want to be able to draw conclusions about all older adults, not just five older adults. But psychologi ...
... population. For example, I would much rather know the mean number of errors made by a population of older adults than the mean number of errors made by a sample of 5 older adults. This is because I want to be able to draw conclusions about all older adults, not just five older adults. But psychologi ...
here
... A further appreciation can be gained by approaching this issue from the opposite direction; that is, by examining what percentage of the population is estimated to exhibit a score as low as an individual’s score when the standard procedure estimates it at 5%. Again using the case of N = 10, the esti ...
... A further appreciation can be gained by approaching this issue from the opposite direction; that is, by examining what percentage of the population is estimated to exhibit a score as low as an individual’s score when the standard procedure estimates it at 5%. Again using the case of N = 10, the esti ...
malhotra15
... hypothesis is not rejected, no changes will be made. An alternative hypothesis is one in which some difference or effect is expected. Accepting the alternative hypothesis will lead to changes in opinions or actions. The null hypothesis refers to a specified value of the population parameter (e.g., ...
... hypothesis is not rejected, no changes will be made. An alternative hypothesis is one in which some difference or effect is expected. Accepting the alternative hypothesis will lead to changes in opinions or actions. The null hypothesis refers to a specified value of the population parameter (e.g., ...
New Lecture Note for Chapter 15
... Kruskal-Wallis hypotheses: 1. Data should come from independent random samples; the response has a continuous (but not necessarily Normal) distribution. ...
... Kruskal-Wallis hypotheses: 1. Data should come from independent random samples; the response has a continuous (but not necessarily Normal) distribution. ...
