
Measures of Variability
... cancel out the negative numbers – remember that a negative value times a negative value equals a positive value – squaring the deviation scores gives us a total number we can work with – the variance ...
... cancel out the negative numbers – remember that a negative value times a negative value equals a positive value – squaring the deviation scores gives us a total number we can work with – the variance ...
16 Hypothesis testing
... Theory-based test for a single mean (an explanation of the method) A. Our null hypothesis states that our data come from a population with a mean of 22.3 (and a standard deviation of 6). If the null hypothesis is true, our data represent a random sample from this population. B. The Central Limit The ...
... Theory-based test for a single mean (an explanation of the method) A. Our null hypothesis states that our data come from a population with a mean of 22.3 (and a standard deviation of 6). If the null hypothesis is true, our data represent a random sample from this population. B. The Central Limit The ...
Sec. 6.2 PowerPoint
... •The probability distribution of Y has the same shape as the probability distribution of X. •µY = a + bµX. •σY = |b|σX (since b could be a negative number). Linear transformations have similar effects on other measures of center or location (median, quartiles, percentiles) and spread (range, IQR). W ...
... •The probability distribution of Y has the same shape as the probability distribution of X. •µY = a + bµX. •σY = |b|σX (since b could be a negative number). Linear transformations have similar effects on other measures of center or location (median, quartiles, percentiles) and spread (range, IQR). W ...
Edwards
... Course Description: This course is an introduction to applied statistics, which is the science of gathering and analyzing data. We will perform some numerical calculations ourselves, with the help of a calculator, but in many practical settings we will use computer software, such as MINITAB or Excel ...
... Course Description: This course is an introduction to applied statistics, which is the science of gathering and analyzing data. We will perform some numerical calculations ourselves, with the help of a calculator, but in many practical settings we will use computer software, such as MINITAB or Excel ...
Geometric probability
... Find the probability that a point chosen randomly inside the rectangle is in each shape. Round to the nearest hundredth. the circle The area of the circle is A = r2 ...
... Find the probability that a point chosen randomly inside the rectangle is in each shape. Round to the nearest hundredth. the circle The area of the circle is A = r2 ...
Measures of Central Tendency
... a) SPSS is not useful for calculating a mode. b) the variable political affiliation is nominal and therefore you should calculate a mode(s) for this variable. c) the variable political affiliation is ordinal and therefore you should calculate a median for this variable. d) to correctly calculate the ...
... a) SPSS is not useful for calculating a mode. b) the variable political affiliation is nominal and therefore you should calculate a mode(s) for this variable. c) the variable political affiliation is ordinal and therefore you should calculate a median for this variable. d) to correctly calculate the ...