Histogram: Shape of sample; Value of estimate; S.D.
A population has a mean of 79 and a standard deviation of 27. Sample means are computed for several thousand random samples of size ? = 81, and a relative frequency histogram is constructed for the sample means.
1. What kind of shape would you expect the histogram of the sample size to have?
2. What value would you estimate for the mean of the histogram of sample means?
3. What value would you estimate for the standard deviation of the histogram of sample means?
Solution Preview
(1) The histogram can be expected to have a bell-shape (similar to that of the ...
... Thus the distribution is bell shaped. ... Y) 12 40.0 18 60.0 23 76.7 Histogram 26 86.7 27 ... 74.03402 Median 1041 Standard Deviation 405.501 Sample Variance 164431.1 ...
... says that , if n exceeds 30, a histogram of the sample will have a bell-shape, even if ... (8) This type of sampling, by definition, is Systematic Sampling. ...
... sets, does the histogram or polygon appear bell-shaped? ... are related, the shape of the histogram seems to ... the reason for observed difference in the shape of the ...
... 360 Weight b. From the histogram, about how ... distribution of sample means approaches shape of a ... Mode 46 Sample variance 37.84090909 Sample SD 6.151496492 25th ...
... h. Include the histogram of the data and a description of the shape of the ... Population Standard Deviation 7532.895303 Sample Mean 10078.5 Sample Size 40 ...
... a symmetric, bell-shaped distribution (similar in shape to the ... The distribution is roughly bell-shaped. ...histogram for the random variable x. Histogram of X. ...
... are not perfect however because their shape partly depends ... femelles en 1979 et 1980 # Create a histogram of fklngth ... such a slope value, with the sample size of ...
... To look at the shape of the distribution, we have to ... Because the histogram isn't symmetric, I would say that the ... In this sample, 15/60, or 25% of the days are ...
