In a data set of test scores, the mean score is 80 and the standard deviation is 10. If a student's score is 90, the probability of getting a score higher than this is ___. A. 成平机北建争有报并记交我之成平机北建争有报并记交我之0.1587成平机北建争有报并记交我之成平机北...
Standard Deviation is a statistical measure that shows how spread out the data values are from the mean, indicating variation or dispersion in a dataset. It's a useful parameter used by Business Analysts worldwide across a range of fields because it provides diverse levels of insight into variab...
The correct Answer is:D To find the standard deviation of the first 10 natural numbers, we can follow these steps: Step 1: Identify the first 10 natural numbersThe first 10 natural numbers are: 1,2,3,4,5,6,7,8,9,10 Step 2: Calculate the mean (¯x)The mean is calculated using...
A random variable Y is normally distributed with a mean of 200 and a standard deviation of 10.比较 the probability of the event that the value of Y is greater than 220,与 1/6." /> gre A random variable Y is normally distributed with a mean of 200 and a standard deviation of 10....
standard的意思是标准，标准的，句中作为名词和形容词使用。一、词汇分析 standard 英 ['stændəd] 美 ['stændɚd]n. 标准；水准；旗；度量衡标准 adj. 标准的；合规格的；公认为优秀的 二、短语 1、standard deviation 标准偏差 2、up to standard 达到标准；合乎标准...
Standard deviation is one of the key methods that analysts, portfolio managers, and advisors use todetermine risk. When the group of numbers is closer to the mean, the investment is less risky. But when the group of numbers is further from the mean, the investment is of greater risk to ...
gre A random variable Y is normally distributed with a mean of 200 and a standard deviation of 10.比较 the probability of the event that the value of Y is greater than 220,与 1/6.
And the Standard Deviation is just the square root of Variance, so:Standard Deviation σ = √21704 = 147.32... = 147 (to the nearest mm)And the good thing about the Standard Deviation is that it is useful. Now we can show which heights are within one Standard Deviation (147 mm) of ...
Given a normal distribution with a standard deviation of {eq}10 {/eq}, what is the mean if {eq}21\% {/eq} of the values are below {eq}50 {/eq}? Z-value Z values are the values associated with the area under the standard normal probability...
The portfolio standard deviation after consideration of correlation:σP = {50%210%2 + 50%2 20%2 + 2 × 50% × 50% × 10% × 20% × 0.6 }1/2σP = 13.6%The portfolio standard deviation is 13.6%. The less than perfect correlation has reduced the standard deviation from 15% to ...