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Mean, median, mode and *standard*** deviation** of Allium cepa cells and Ovibos moschatus Oculi cells
| Allium cepa cells | Ovibos moschatus Oculi cells |
Mean / m | 296.0 | 29.0 |
Median / m | 300.0 | 30.0 |
Mode / m | 320.0 | 30.0 |

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produce harm
A
-30% -20%
-10%
0%
10% 20% 30% 40% Possible Returns on the Stock
7
FIN 254 (Instructor- Saif Rahman)
Risk: Calculating the *standard*** deviation** for each alternative

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the normal distribution depends on two factors, which are mean (µ) and *standard*** deviation** (which determines the height and width of a graph).
Normal distribution of data is continuous for all values of x between -∞ and ∞ so that the intervals of a real number doesn’t have a probability of zero (-∞ ≤ x ≤ ∞). A probability density function:
where x is a normal random variable, μ is the mean, σ is the

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[ασ (RA ) − (1 − α)σ (RB )]2 .
Therefore, the *standard*** deviation** of portfolio P is
σ (RP ) = ασ (RA ) − (1 − α)σ (RB ).
As assets A and B are perfectly negatively correlated, we can construct portfolio P
such that its

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distinguish between the two in order to use the correct formula? mean; median; mode; range; quartiles; variance; *standard*** deviation**. 2. The following numbers represent the weights in pounds of six 7year old children in Mrs. Jones' 2nd grade class. {25, 60, 51, 47, 49, 45} Find the mean; median; mode; range; quartiles; variance;

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decimals)
Q-2b: What is the median amount spent on textbooks? (Round to two decimals)
Q-2c: What is the mode with respect to the number of affiliations to clubs and other organizations of these undergraduates?
Q-2d: What is the *standard*** deviation** of these students' GPAs? (Round to two decimals)
Q-2e: Using coefficients of variation, tell me which has more variation, the age of the students in this sample or the amounts that they spent on textbooks.
ANSWERS
Q-2a) The average...

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measure of location.
This is due to the fact that the mean has valuable mathematical properties that make it convenient for use with inferential statistical analysis.
For example:
the sum of the ** deviations** of the numbers in a set of data from the mean is zero; and
the sum of the squared

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Fama-Macbeth (1973) CAPM test on size and value effects. The average return and *standard*** deviations** are shown in Table I:
Table I: Average returns and

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+ (0.20) (0.15) + (0.40)(0.20) + (0.20) (0.25) + (0.10) (0.30)
= 0.20 or 20%
5. The risk of a single asset is measured by its *standard*** deviation** or coefficient of variation. The

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confidence intervals verses point estimates? The sample mean is a point estimate (single number estimate) of the population mean – Due to sampling error, we know this is off. Instead, we construct an interval estimate, which takes into account the *standard*** deviation**, and sample size.
– Usually stated as (point estimate) ± (margin of error)
• What is meant by a 95% confidence interval? That we are 95% confident that our calculated confidence interval actually contains the true mean.
• What is the...

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