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... The t confidence interval and test are exactly correct when the distribution of the population is exactly normal. No real data are exactly normal. The usefulness of the t procedures in practice therefore depends on how strongly they are affected by lack of normality. A confidence interval or signifi ...
... The t confidence interval and test are exactly correct when the distribution of the population is exactly normal. No real data are exactly normal. The usefulness of the t procedures in practice therefore depends on how strongly they are affected by lack of normality. A confidence interval or signifi ...
File - RBV AP Statistics
... (b) Between .01 and .025 (c) Between .025 and .05 (d) Between .05 and .10 (e) Over .10 5. If t = -3.56 for a two sided t-test where the same size was 20, where would the P-value lie? (a) Below .0005 (b) Between .0005 and .001 (c) Between .001 and .0025 (d) Between .002 and .005 (e) Cannot be determi ...
... (b) Between .01 and .025 (c) Between .025 and .05 (d) Between .05 and .10 (e) Over .10 5. If t = -3.56 for a two sided t-test where the same size was 20, where would the P-value lie? (a) Below .0005 (b) Between .0005 and .001 (c) Between .001 and .0025 (d) Between .002 and .005 (e) Cannot be determi ...
Chapter 3 McGrew and Monroe
... ◦ Without information to the contrary, data are distributed evenly within the interval ◦ Best summary representation of the values in each interval is the class midpoint Class midpoint – value that is exactly midway between extreme values that identify the class interval ...
... ◦ Without information to the contrary, data are distributed evenly within the interval ◦ Best summary representation of the values in each interval is the class midpoint Class midpoint – value that is exactly midway between extreme values that identify the class interval ...
BASIC CONCEPTS OF PROBABILITY
... occurs with the highest frequency Possible for mode to be nonexistent in a series of numbers or to have more than one value. A series of numbers is referred to as unimodal if it has one mode, bimodal if it has two modes and multimodal if there are more than two modes. Data grouped into frequen ...
... occurs with the highest frequency Possible for mode to be nonexistent in a series of numbers or to have more than one value. A series of numbers is referred to as unimodal if it has one mode, bimodal if it has two modes and multimodal if there are more than two modes. Data grouped into frequen ...
Exam Review
... d) Create a Box and Whiskers Plot to illustrate the range, interquartile range and median of a set of data. e) Calculate percentiles for a set of data and interpret their meaning. f) Calculate the deviation of the data in a set. g) Determine the standard deviation and variance of a set of data using ...
... d) Create a Box and Whiskers Plot to illustrate the range, interquartile range and median of a set of data. e) Calculate percentiles for a set of data and interpret their meaning. f) Calculate the deviation of the data in a set. g) Determine the standard deviation and variance of a set of data using ...
2. A 95% confidence interval for the standard normal distribution
... • Since we consider both biased alternatives, a two-tailed test is performed. The null hypothesis is that the coin is fair, and that any deviations from the 50% rate can be ascribed to chance alone. • Suppose that the experimental results show the coin turning up heads 14 times out of 20 total flips ...
... • Since we consider both biased alternatives, a two-tailed test is performed. The null hypothesis is that the coin is fair, and that any deviations from the 50% rate can be ascribed to chance alone. • Suppose that the experimental results show the coin turning up heads 14 times out of 20 total flips ...