SDA 101 Students Chi-Square Test of Independence c2
SPSS output for Regression Tests of Significance Normal distribution
SPSS Instructions Exam questions More Questions
Question One
A SRS of a certain substance was obtained and each specimen in the sample was weighed. The weights (in mg) are given in the stem plot below
Stem-and-Leaf Plot of weights
Stem & Leaf
0 11123333
0 678
1 12
1 799
2 4
2 56
3
3
4
4
5 3
Stem width: 100.00
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Complete the blanks below using words/numbers/symbols chosen from the following list:
Note you will not use all of the words and each cell is considered as one dash in the paragraph
For example is not would fit in the space
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The stem plot above shows that the data from the S___________ R__________ S____________ is skewed to the _____________. The mean would therefore be ___________ than the median. One possible transformation to eliminate the skewness is the log transformation, another possible transformation is ______________.
The table on the previous page shows that the data _____________ normally distributed. This can be seen because the __________ value is equal to ___________ and this is less than ___________
The mean of the data set is 122 and the sample standard deviation is 129.31. The symbol for the sample mean is ____ and for the sample standard deviation is ____.
If a linear transformation was applied to the data it _____________ change the shape of the stem plot. If the transformation involved dividing each observation by 10 and then adding 1, the mean and standard deviation of the transformed data would be ________ and _________.
