0
What else can I help you with?
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
What percent of the scores in a normal distribution will fall within one standard deviation?
It is 68.3%
A normal distribution has a mean of µ = 50 with σ = 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 µ = 500 with σ = 100. What is the probability that a randomly selected college applicant will have a score greater than 640?
In a standard normal distribution about percent of the scores fall above a z-score of 3.00?
0.13
What z-score value separates the highest 40 percent of the scores from the rest of the distribution?
0.2533
The mean of a distribution of scores is the?
The mean of a distribution of scores is the average.
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 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.
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.
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.
z scores?
If a random variable X has a normal distribution with mean m and standard error s, then the z-score corresponding to the value X = x is (x - m)/s.
