Word - ASDL Community
... bother us as it is not that different from the next lowest value and, more important, an error in counting M&Ms does seem not likely when the bag contains just 55 M&Ms (a counting error is more likely if a bag has 550 M&Ms). For the same reason, we are not likely to question a result of 0. A result ...
... bother us as it is not that different from the next lowest value and, more important, an error in counting M&Ms does seem not likely when the bag contains just 55 M&Ms (a counting error is more likely if a bag has 550 M&Ms). For the same reason, we are not likely to question a result of 0. A result ...
PrecMod: An Automated Precision SAS® Macro for Random Effects Models
... Random effects models are used in a typical randomized controlled trial for reproducibility analysis to estimate the variance component effects and total variability. For example, a typical registrational study in the medical/molecular diagnostics industry evaluating precision will measure the effec ...
... Random effects models are used in a typical randomized controlled trial for reproducibility analysis to estimate the variance component effects and total variability. For example, a typical registrational study in the medical/molecular diagnostics industry evaluating precision will measure the effec ...
Document
... Step 5: Draw a line from Q1 end of box to smallest data value that is not further than 1.5 IQR from Q1. Draw a line from Q3 end of box to largest data value that is not further than 1.5 IQR from Q3. Step 6: Mark data points further than 1.5 IQR from either edge of the box with an asterisk. Poi ...
... Step 5: Draw a line from Q1 end of box to smallest data value that is not further than 1.5 IQR from Q1. Draw a line from Q3 end of box to largest data value that is not further than 1.5 IQR from Q3. Step 6: Mark data points further than 1.5 IQR from either edge of the box with an asterisk. Poi ...
Computational Public Health Statistics (HS267)
... The study considers two variables: a dependent variable and an independent variable. The dependent variable is the response variable or study outcome, which in this instance is weight gain. The independent variable is the explanatory variable, which in this instance “type of ...
... The study considers two variables: a dependent variable and an independent variable. The dependent variable is the response variable or study outcome, which in this instance is weight gain. The independent variable is the explanatory variable, which in this instance “type of ...
Chapter 1: Describing Data with Numbers and Graphs
... classified as nominal. Each division is considered equal to all the others; there is no hierarchy or superiority between the divisions. Even though you may favor one over the other doesn’t make that one superior to the other! That is, just because you love the Phillies and hate the Pirates doesn’t m ...
... classified as nominal. Each division is considered equal to all the others; there is no hierarchy or superiority between the divisions. Even though you may favor one over the other doesn’t make that one superior to the other! That is, just because you love the Phillies and hate the Pirates doesn’t m ...
Document
... (b) Mode = 10, median = 15, mean = 23, using the same techniques as part (a) (c) Each statistic was multiplied by 5. In general, multiplying each value in a data set by a constant c results in the mode, median, and mean being multiplied by c. (d) Mode = 177.8 cm, median = 172.72 cm, mean = 180.34 cm ...
... (b) Mode = 10, median = 15, mean = 23, using the same techniques as part (a) (c) Each statistic was multiplied by 5. In general, multiplying each value in a data set by a constant c results in the mode, median, and mean being multiplied by c. (d) Mode = 177.8 cm, median = 172.72 cm, mean = 180.34 cm ...
T02-04 Histogram (User Selected Classes)
... The Histogram Frequency Information is displayed along with an interpretation of the “hard to read” EXCEL output (e.g. the number of data observations greater than 72.8 and less than or equal to 90.2438 is 5). ...
... The Histogram Frequency Information is displayed along with an interpretation of the “hard to read” EXCEL output (e.g. the number of data observations greater than 72.8 and less than or equal to 90.2438 is 5). ...
Evaluation of Discrepant Data
... in the case of the simple median the Bootstrap Method does not make use of the uncertainties quoted with the data. ...
... in the case of the simple median the Bootstrap Method does not make use of the uncertainties quoted with the data. ...
Basics of Statistics
... Definition 1.4 (Population). A (statistical) population is the set of measurements (or record of some qualitive trait) corresponding to the entire collection of units for which inferences are to be made. (Johnson & Bhattacharyya, 1992) Definition 1.5 (Sample). A sample from statistical population is ...
... Definition 1.4 (Population). A (statistical) population is the set of measurements (or record of some qualitive trait) corresponding to the entire collection of units for which inferences are to be made. (Johnson & Bhattacharyya, 1992) Definition 1.5 (Sample). A sample from statistical population is ...
Mean Absolute Deviation
... measurements for a group are spread out from the average (mean), or expected value. A low standard deviation means that most of the numbers are very close to the average. A high standard deviation means that the numbers are spread out. ...
... measurements for a group are spread out from the average (mean), or expected value. A low standard deviation means that most of the numbers are very close to the average. A high standard deviation means that the numbers are spread out. ...
Summarizing Measured Data
... Use this “center” to summarize overall behavior Not recommended for real information, but ...
... Use this “center” to summarize overall behavior Not recommended for real information, but ...
Sample student project - Depression vs. Age
... Since the non-coded method is difficult to use due to its large values, unless done by computer, it is not often used. The coded method, on the other hand, is known for its simplicity due to its simple values and calculations, which can also be done without the aid of a computer. Instead of working ...
... Since the non-coded method is difficult to use due to its large values, unless done by computer, it is not often used. The coded method, on the other hand, is known for its simplicity due to its simple values and calculations, which can also be done without the aid of a computer. Instead of working ...
Discrete Data
... distribution (of the variable). Distributions detail what values occur and how often they occur. The first step in dealing with any variable’s distribution is to "make a picture." The appropriate picture here is the histogram. There are two, essentially equivalent, varieties of histograms: frequency ...
... distribution (of the variable). Distributions detail what values occur and how often they occur. The first step in dealing with any variable’s distribution is to "make a picture." The appropriate picture here is the histogram. There are two, essentially equivalent, varieties of histograms: frequency ...
Report of ______ for Chapter 2 pretest
... Generally, you are looking to create between 10 and 20 intervals. The interval width should be odd and it should make sense in terms of the distribution. The lower limit of the first interval should be a multiple of the interval width and include the lowest value in the distribution. Divide 39 by 10 ...
... Generally, you are looking to create between 10 and 20 intervals. The interval width should be odd and it should make sense in terms of the distribution. The lower limit of the first interval should be a multiple of the interval width and include the lowest value in the distribution. Divide 39 by 10 ...
Part II. Testing the assumptions for ANOVA
... As you can see in the above plot, the variances are more similar among groups. This suggests the log transformation was successful at equalizing the variation among group residuals. Now let’s see what happened to normality. The UNIVARIATE Procedure ...
... As you can see in the above plot, the variances are more similar among groups. This suggests the log transformation was successful at equalizing the variation among group residuals. Now let’s see what happened to normality. The UNIVARIATE Procedure ...
NOTE: There is a lot of reading, but I have broken them into chunks
... that has presumably already been developed and tested through the other types of research studies. An example of evaluation research would be a study to find out if teaching to the "multiple intelligences" of the students is worth the extra preparation and class time it requires. As you can see, res ...
... that has presumably already been developed and tested through the other types of research studies. An example of evaluation research would be a study to find out if teaching to the "multiple intelligences" of the students is worth the extra preparation and class time it requires. As you can see, res ...
Online Statistics Education B
... 1. Linearity: The relationship between the two variables is linear. 2. Homoscedasticity: The variance around the regression line is the same for all values of X. A clear violation of this assumption is shown in Figure 1. Notice that the predictions for students with high high-school GPAs are very go ...
... 1. Linearity: The relationship between the two variables is linear. 2. Homoscedasticity: The variance around the regression line is the same for all values of X. A clear violation of this assumption is shown in Figure 1. Notice that the predictions for students with high high-school GPAs are very go ...
Robust analysis of the central tendency, simple and
... equal to 1. The MAD itself is not a consistent estimator of the standard deviation (i.e., it does not converge to the standard deviation when the number of observations increases to infinity and the variable in the population followed a normal distribution). To make it consistent, it is necessary to ...
... equal to 1. The MAD itself is not a consistent estimator of the standard deviation (i.e., it does not converge to the standard deviation when the number of observations increases to infinity and the variable in the population followed a normal distribution). To make it consistent, it is necessary to ...
Data Preparation/Descriptive Statistics
... Cleaning your variables If you are using datasets with categorical variables you need to clean them by getting rid of the non-response categories like ‘do not know’, ‘no answer’, ‘no applicable’, ‘not sure’, ‘refused’, etc. Usually non-response categories have higher values like 99, 999, 9999, etc ...
... Cleaning your variables If you are using datasets with categorical variables you need to clean them by getting rid of the non-response categories like ‘do not know’, ‘no answer’, ‘no applicable’, ‘not sure’, ‘refused’, etc. Usually non-response categories have higher values like 99, 999, 9999, etc ...
OLS Regression Using SPSS - University of Notre Dame
... information about each intermediate model, whereas Stata pretty much just jumps to the final model. Key parts of the printout include ...
... information about each intermediate model, whereas Stata pretty much just jumps to the final model. Key parts of the printout include ...
4208 2016 week 2
... • If we write it out as an equation, where we have n observations, we could write it out as such: ...
... • If we write it out as an equation, where we have n observations, we could write it out as such: ...
Describing Data
... The standard deviation is the most widely used measure of dispersion. However, there are other ways of describing the variation or spread in a set of data. One method is to determine the location of values that divide a set of observations into equal parts. These measures include quartiles, deciles, ...
... The standard deviation is the most widely used measure of dispersion. However, there are other ways of describing the variation or spread in a set of data. One method is to determine the location of values that divide a set of observations into equal parts. These measures include quartiles, deciles, ...