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Is it possible for more than 50 percent of the scores in a distribution to have values greater than the mean?
Wiki User
โ 12y ago
Yes.
Consider the values 0,1,1,1,1,1,1,1,1,1
The mean is 0.9
9 out of 10 values are higher than this mean, which is obviously more than 50%.
Wiki User
โ 12y ago
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What z-score value separates the highest 40 percent of the scores from the rest of the distribution?
0.2533
What is a negative frequency distribution?
If most the population has many high scores, the distribution is negatively skewed. If most have many low scores, it is positively skewed
1 The average of the squared deviation scores from a distribution mean?
Variance
What is one advantage of transforming X values into z-scores?
True or False, One major advantage of transforming X values into z-scores is that the z-scores always form a normal distribution
What percentage of scores fall between 0 and -2 in a normal distribution?
2
For a normal distribution what z-score value separates the lowest 10 percent of the scores from the rest of the distribution?
-1.28
A normal distribution has a mean of ยต = 50 with ฯ = 10. What proportion of the scores in this distribution are greater than X = 65?
Scores on the SAT form a normal distribution with a mean of ยต = 500 with ฯ = 100. What is the probability that a randomly selected college applicant will have a score greater than 640? โ
What percent of the scores in a normal distribution will fall within one standard deviation?
It is 68.3%
The mean of a distribution of scores is the?
The mean of a distribution of scores is the average.
What z-score value separates the highest 40 percent of the scores from the rest of the distribution?
0.2533
In a standard normal distribution about percent of the scores fall above a z-score of 3.00?
0.13
If a sample of n 15 scores has been organized in a grouped frequency distribution table it is possible to obtain a list of all 15 scores from the table?
true
What is the percentile rank if the raw score is 34?
It is not possible to convert a raw score into a percentile without knowing the distribution of scores and key parameters of the distribution. Since none of this information is provided, it is not possible to give a sensible answer.
What is the range of possible percent scores a student could can earn on a test?
50% to 100%.
In a standard normal distribution about percent of the scores fall above a z score of 300?
A Z score of 300 is an extremely large number as the z scores very rarely fall above 4 or below -4. About 0 percent of the scores fall above a z score of 300.
How do you find the scores at the 60th percentile in a set of 200 scores?
You can't do this without knowing the distribution of scores.
How would you characterize the distribution of scores in a normal distribution?
They are said to be Normally distributed.
