How to calculate $e^x$ with a standard calculator
Financial Calculator HP 10bII - Standard Deviation with Probability. 5. Calculate ln(x) using 8-digit ...
Find the standard matrix for a linear transformation
(After each step you have in each row a vector and its image. This is because of linearity.) If you manage to obtain the identity matrix on the left, then you know the images of the vectors from the standard basis, which is sufficient to obtain the matrix of your linear transformation. (Since you're using column vectors, the result is the ...
How to know when to put calculator in radian or degree mode?
I should mention that for those first 4 problems, I think the point is actually not to use a calculator. The second part says ¨Find the function values. Round to four decimals places.¨: Cos 111.4° degree mode because there is a degree symbol. Sin( …
Establishing the upper and lower bounds of normal using …
Your problem is that you are subtracting the full standard deviation from the mean. When you do that, it means that you are multiplying the standard deviation by 2, since you are subtracting $1*std(x)$ and adding $1*std(x)$. Instead, add/subtract $\frac{1}{2}*std(x)$. Thus, your …
can fractions be done on a regular caculator?
2014年7月3日 · But if you want an immediate answer without any extra thought or scratch-work, you need a calculator that can handle fractions. Note that not all scientific calculators can handle fractions natively. The ones that can have a special fraction key, e.g. the Casio that I used a long time ago in school had an "a b/c" key that allowed you to enter ...
statistics - Standard deviation of the weighted mean
For an unweighted sample, calculating the standard deviation of the mean from the standard deviation of the distribution is described on Wikipedia. How do I calculate it for the weighted mean, and how is the expression derived?
What is a good way to compute $\\Gamma(1/3)$ on a standard …
2024年6月9日 · The earlier question asks how to calculate a certain integral efficiently with a standard pocket calculator. A fine answer by Travis Willse gives a good result but begs the question of calculating $\Gamma(1/3)$, which appears in the derived series expansion. So I explored a possible solution.
How Can I calculate the standard deviation of a yes/no question?
2020年11月29日 · Is it possible to calculate the standard deviation of a single yes/no question? For example, 100 people took the survey and 60 of them chose "yes", 40 of them chose "no".
Standard deviation sig figs - Mathematics Stack Exchange
2020年5月30日 · Let's say I calculated a mean to be 2.475, but the data values had the least significant figure in the tenths place (i.e. 2.6, 2.8 etc.) so I round the mean value to 2.5 for correct sig figs. Howev...
How do I combine standard deviations of two groups?
2018年10月26日 · This is the formula for the 'pooled standard deviation' in a pooled 2-sample t test. If we may have two samples from populations with different means, this is a reasonable estimate of the (assumed) common population standard deviation $\sigma$ of the two samples.