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For a given set of data, the standard deviation measures:
The difference between the mean and the data point farthest from the mean.
The difference between the mean and the data point nearest to the mean.
The difference between the mean and the median.
None of the above.
Compute the Expected Value (Mean), The Variance, and The Standard Deviation for this random variable. X 1 2 3 4 5 6 7
specifically 68 of gen y people have a say in computer purchases. suppose you select a sample of 100 gen y
A random sample of n=64 children of working mothers showed that they were absent from school an average of 5.3 days per term, with a standard deviation of 1.8 days
Calculate the mean difference for the following data. The scores are the number of pictures the participants remembered correctly out of 20.
construct both an ungrouped and a grouped frequency distribution for the data given below146 150 149 153 160 149 146
X is said to be Position distributed with parameter lambda >0 if it has the following pmf: PX(x)= (lambda ^x)*e^(-lambda)/ x! where x = 0, 1, 2... and 0 otherwise.
a chi-square goodness-of-fit test is to be performed. the relative frequencies for the null hyupothesis and the sample
Give an example representing a discrete probability distribution and another example representing a continuous probability distribution. Explain why your choices are discrete and continuous.
through years of careful observation you have begun to suspect that how vocal cats are is somehow related to the
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
The least squares method minimizes and identifies the range for a correlation coefficient - statements is least accurate concerning correlation analysis?
from 1975 to 1986 the general social survey asked its participants if they favored or opposed capital punishment. a
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