How many standard deviations away from the mean (mean=7.96, standard deviation = 0.89) is 6.5 if the data follows a normal distribution?
How many standard deviations away from the mean (mean=7.96, standard deviation = 0.89) is 6.5 if...
An outlier is a. a data point that falls more than two standard deviations away from the mean. b. a data point that falls more than three standard deviations away from the mean. c. a data point that exceeds the median. d. a data point that falls below zero.
8. A dataset has a mean of µ = 1.2 and a standard deviation of σ = 0.9. How many standard deviations away is 5? How many standard deviations away is 1.5? -2? 0? 5?
Suppose that student’s z score is 3.00 what does this mean? discuss in terms of units of standard deviation It means the value defined by z-score is 3 standard deviations away from the mean value. Discuss in terms of its percentile score. In terms of percentile score, its mean amount of data lies below the value. Z=3 represent the 99.87 the percentile. 4. How does this student’s z score differ from another student whose z score is -3.00 5. If...
Is a measure of 25 inches "far away" from a mean of 16 inches? As someone with knowledge of statistics, you answer "it depends" and request the standard deviation of the underlying data. (a) Suppose the data come from a sample whose standard deviation is 3 inches. How many standard deviations is 25 inches from 16 inches? (b) Is 25 inches far away from a mean of 16 inches? (c) Suppose the standard deviation of the underlying data is 7...
In a normal distribution, a data value located 0.5 standard deviations below the mean has Standard Score: z = In a normal distribution, a data value located 2.4 standard deviations above the mean has Standard Score: z = In a normal distribution, the mean has Standard Score: z =
pick a number for mean and standard deviation generate 5 random numbers using a normal distribution and mean and standard deviation from (i) using your 5 numbers find the mean and the standard deviation of your data How far is your sample mean from your true mean? By 'far' I mean how many sample standard deviations. use the absolute value of distance here Repeat steps 2-4 1000 times. you should now have 1000 measures how far your sample mean is...
Assuming that the population (or sample) has a normal distribution, how many standard deviations above and below the mean contains 99% of the population (or sample)?
Lee's first history exam score is +2 standard deviations from the mean in a normal distribution. The test has a mean of 65 and a standard deviation of 5. Lee's percentile rank would be approximately _____. a.97.5% b.65 % c.75 % d.none of the above
1)In a standard normal distribution, what proportion of the data set is within 1.75 standard deviations away from the mean? Write your answer in percent and with 2 decimal places. (Answer: 91.99 (with margin: 0.01) please show your work.) 2)A 100-point test was administered to a statistics class. Jack's score was in the 80th percentile. Suppose the statistics class has 120 students and all of them took the test, how many students scored lower than or equal to Jack's score?(Answer:96.0...
For a standard normal distribution, find the percentage of data
that are within 1.5 standard deviations from the mean.
Group of answer choices
Question 1 0.11 pts For a standard normal distribution, find the percentage of data that are within 1.5 standard deviations from the mean. 43.32% 86.64% 93.32% 6.68%