Statistics for one and two samples
... in our setting we have only a rather small sample, so in fact we may have to speculate, that is, assume some specific X-distribution f . The most common type of assumption, or one could say model, for the population distribution is to assume it to be the normal distribution. This assumption makes th ...
... in our setting we have only a rather small sample, so in fact we may have to speculate, that is, assume some specific X-distribution f . The most common type of assumption, or one could say model, for the population distribution is to assume it to be the normal distribution. This assumption makes th ...
NOTE: There is a lot of reading, but I have broken them into chunks
... participants with similar characteristics into two or more groups, then apply different treatments to each of the groups; the results allow the researchers to draw conclusions about cause and effect. An experimental study might be to determine the effect of practicing multiplication facts using the ...
... participants with similar characteristics into two or more groups, then apply different treatments to each of the groups; the results allow the researchers to draw conclusions about cause and effect. An experimental study might be to determine the effect of practicing multiplication facts using the ...
Confidence Intervals
... second row of boldfaced column headings. Say we want 95% confidence; we choose the 5th column from the right, with the column headings 0.0250 and 0.9500. (The first column heading is the area in the right tail; the second column heading is the confidence level. The reason these don’t add up to 1 is ...
... second row of boldfaced column headings. Say we want 95% confidence; we choose the 5th column from the right, with the column headings 0.0250 and 0.9500. (The first column heading is the area in the right tail; the second column heading is the confidence level. The reason these don’t add up to 1 is ...
Document
... judgement on the part of the chemist. Nevertheless, it is a task that cannot be neglected because an analysis of totally unknown reliability is worthless. Thus the task of the analytical chemist goes beyond that of correctly performing the manipulations and taking the readings required in a procedur ...
... judgement on the part of the chemist. Nevertheless, it is a task that cannot be neglected because an analysis of totally unknown reliability is worthless. Thus the task of the analytical chemist goes beyond that of correctly performing the manipulations and taking the readings required in a procedur ...
791-04-Collocations
... (or Student's t-test) H0 states that: P(w1 , w2 ) P(w1 )P(w2 ) We calculate the probability p-value that a collocation would occur if H0 was true If p-value is too low, we reject H0 ...
... (or Student's t-test) H0 states that: P(w1 , w2 ) P(w1 )P(w2 ) We calculate the probability p-value that a collocation would occur if H0 was true If p-value is too low, we reject H0 ...
Testing Statistical Assumptions
... Parametric tests are significance tests which assume a certain distribution of the data (usually the normal distribution), assume an interval level of measurement, and assume homogeneity of variances when two or more samples are being compared. Most common significance tests (z tests, t-tests, and F ...
... Parametric tests are significance tests which assume a certain distribution of the data (usually the normal distribution), assume an interval level of measurement, and assume homogeneity of variances when two or more samples are being compared. Most common significance tests (z tests, t-tests, and F ...
Unit 1: Univariate Data
... Determine whether the following variables are categorical (C) or quantitative (Q) 1. Brand of vehicle purchased by a customer 2. Price of a CD 3. Type of M&Ms preferred by students (peanut, plain) 4. Phone number of each student 5. Height of a 1-year old child 6. Term paper status (turned in on time ...
... Determine whether the following variables are categorical (C) or quantitative (Q) 1. Brand of vehicle purchased by a customer 2. Price of a CD 3. Type of M&Ms preferred by students (peanut, plain) 4. Phone number of each student 5. Height of a 1-year old child 6. Term paper status (turned in on time ...
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