What percent of X values are within +/- one standard deviation of the mean?
Less than 50% |
Approximately 95% |
Approximately 99% |
Approximately 68% |
What percent of X values are within +/- one standard deviation of the mean? Less than...
hat percent of X values are more than one standard deviation away from the mean? The approximate percent cannot be estimated. Approximately 32% Approximately 68% Approximately 5%
15.When a distribution is bell-shaped, approximately what percentage of data values will fall within 1 standard deviation of the mean? a. 50% c. 95% b. 68% d. 99.7% 21. If the mode is to the left of the median and the mean is to the right of the median, then the distribution is _________ skewed.
10.1 A. Calculate the mean and standard deviation of the following securities’ returns: Year Computroids Inc. Blazers Inc. 1 10% 5% 2 5% 6% 3 –3% 7% 4 12% 8% 5 10% 9% B. Assuming these observations are drawn from a normally distributed probability space, we know that about 68% of values drawn from a normal distribution are within one standard deviation away from the mean or expected return; about 95% of the values are within two standard deviations; and...
24. About what percent of the x values from a normal distribution lie within two standard deviations (left and right) of the mean of that distribution? (Enter an exact number as an integer, fraction, or decimal.) _______ % 25. About what percent of x values lie between the mean and one standard deviation (one sided)? (Enter an exact number as an integer, fraction, or decimal.) _______ % 26. About what percent of x values lie between the first and third standard deviations (both sides)?...
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standard normal probability distribution function The staand σ 1) is graphed in the standard (x,y) dinate plane below. Which of the following cclosest to the percent of the data points within 2 standard deviations of the mean in (H percentages is that are any normal distribution? ceare 0.5 0.2 A. 50% B. 68% C. 90% D. 95% E. 99% 3 2 1 -0.2
standard normal probability distribution function The staand σ 1) is graphed in the standard (x,y) dinate...
In a normal distribution, if x bar represents the mean and o represents the standard deviation what percent of information falls between x bar and x bar + o? a. 34 b. 50 c. 68 d. 95
For the normal distribution, the mean plus and minus one standard deviation will include about what percent of the observations? a. 34% b. 68% c. 48% d. 95%
For normally distributed data, what is the probability that a data point wil fall within one standard deviation of the mean? (i) 50% (ii) 68% 0 (iii) 95% (iv) 99.7% s save Submt Assignment For normally distributed data, what is the probability that a data point will fall within one standard deviation of the mean? 0 (i) 50% @ (u) 68% 0 (m) 95% (w) 99.7% Subme Assignment Quit& Save 6
The empirical rule states that, for data having a bell-shaped distribution, the percentage of data values being within one standard deviation of the mean is approximately t of Select one: a. 33%. b, 50% C. 68%. d. 95%.
(a) Place the flags one standard deviation on either sid of the mean. What is the area between these two values What does the 68-95-99.7 rule say this area is? (b) Repeat for locations two and three standard deviations on either side of the mean. Again compare t 68-95-99.7 rule with the area given by the applet. 1.118 Find some proportions. Using either Table A or your calculator or software, find the proportion of observations from a standard Normal distribution...