Question 58832This question is from textbook
: 1. Fifteen accounting majors had an average grade of 90 on a finance exam. Seven marketing majors averaged 85, while ten finance majors averaged 93 on the same examine. What is the weighted mean for the 32 students taking the exam?
2. A distribution described as negatively skewed would have the following characteristics:
a. The mode between the median and mean, observing from left to right.
b. the mean between the median and mode, observing from left to right.
c. The median between the mean snd the mode, observing from left to right
d. The relative location of mean, median, and mode is impossible to determine without more information
e. None of the above
3. Which of the following measures of dispersion are based on deviations from the mean.
a. Variance
b. Standart deviation
c. All the above
d. None of the above
4. What is the relationship between the variance and the standart deviation?
a. Variance is the square root of the standard deviation
b. Variance is the square of the standard deviation
c. Variance is twice the the stardard deviation
d. No constant relationship between the variance and the standard deviation
This question is from textbook
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1. Fifteen accounting majors had an average grade of 90 on a finance exam. Seven marketing majors averaged 85, while ten finance majors averaged 93 on the same examine. What is the weighted mean for the 32 students taking the exam?
(15*90+7*85+10*93)32=89.84
2. A distribution described as negatively skewed would have the following characteristics:
a. The mode between the median and mean, observing from left to right.
b. the mean between the median and mode, observing from left to right.
c. The median between the mean snd the mode, observing from left to right
d. The relative location of mean, median, and mode is impossible to determine without more information
e. None of the above
mean < mode ; so answer "b"
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3. Which of the following measures of dispersion are based on deviations from the mean.
a. Variance
b. Standart deviation
c. All the above
d. None of the above
Ans: "c"
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4. What is the relationship between the variance and the standart deviation?
a. Variance is the square root of the standard deviation
b. Variance is the square of the standard deviation
c. Variance is twice the the stardard deviation
d. No constant relationship between the variance and the standard deviation
Ans: "b"
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Cheers,
Stan H.
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