1. Calculate X x f (X times f), X squared, and X squared x f for each value of X in the table below. X Frequency X x f X2 X2 x f 2 5 3 3 4 4 5 8 2. From the table above, calculate N, sum X, M (the mean), and sum of X2. 3. From the values calculated in Q2, calculate the SS (sum of squared deviations) using the computational formula. 4. Calculate the variance and standard deviation, assuming that the table above represents measures from a sample. 5. Calculate the variance and standard deviation, assuming that the table above represents measures from a population.
1. Calculate X x f (X times f), X squared, and X squared x f for each value of X in the table below. X Frequency X x f X2 X2 x f 2 5 3 3 4 4 5 8 2. From the table above, calculate N, sum X, M (the mean), and sum of X2. 3. From the values calculated in Q2, calculate the SS (sum of squared deviations) using the computational formula. 4. Calculate the variance and standard deviation, assuming that the table above represents measures from a sample. 5. Calculate the variance and standard deviation, assuming that the table above represents measures from a population.
Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter38: Achievement Review—section Three
Section: Chapter Questions
Problem 6AR
Related questions
Question
1. Calculate X x f (X times f), X squared, and X squared x f for each value of X in the table
below.
X Frequency X x f X2 X2 x f
2 5
3 3
4 4
5 8
2. From the table above, calculate N, sum X, M (the mean), and sum of X2.
3. From the values calculated in Q2, calculate the SS (sum of squared deviations) using the
computational formula.
4. Calculate the variance and standard deviation, assuming that the table above represents
measures from a sample.
5. Calculate the variance and standard deviation, assuming that the table above represents
measures from a population.
below.
X Frequency X x f X2 X2 x f
2 5
3 3
4 4
5 8
2. From the table above, calculate N, sum X, M (the mean), and sum of X2.
3. From the values calculated in Q2, calculate the SS (sum of squared deviations) using the
computational formula.
4. Calculate the variance and standard deviation, assuming that the table above represents
measures from a sample.
5. Calculate the variance and standard deviation, assuming that the table above represents
measures from a population.
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VIEWStep 3: 2. calculate N, sum X, M (the mean), and sum of X2.
VIEWStep 4: calculate the SS (sum of squared deviations) ,Calculate Q2
VIEWStep 5: 4.Calculate the variance and standard deviation for sample
VIEWStep 6: Calculate the variance and standard deviation for Population
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