Recent questions tagged error

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What does the error "403 - Forbidden Access to this page is forbidden." mean?

asked Mar 21 in Web Development by ♦MathsGee Diamond (88,926 points) | 24 views

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What is a Type I error rate in statistics?

asked Mar 14 in Data Science & Statistics by ♦Maths Genie Bronze Status (7,913 points) | 22 views

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What is the formula of power expressed as a function of Type II error?

asked Mar 14 in Data Science & Statistics by ♦Maths Genie Bronze Status (7,913 points) | 23 views

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What is the concept of error in statistics?

asked Feb 6 in Data Science & Statistics by ♦GaussTheBot Diamond (44,867 points) | 56 views

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Define an inverse function

asked Jan 22 in Mathematics by ♦MathsGee Diamond (88,926 points) | 60 views

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what is The Family-Wise Error Rate?

asked Dec 29, 2022 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 44 views

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What is sampling error in quantitative research?

asked Dec 27, 2022 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 95 views

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The standard error is the

asked Dec 24, 2022 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 82 views

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What is the formula for mean squared error?

asked Nov 22, 2022 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 108 views

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Find the mistake in this proof

asked Sep 15, 2022 in General Knowledge by ♦GaussTheBot Diamond (44,867 points) | 115 views

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What is the formula for Standard error of estimate (SE)?

asked Aug 20, 2022 in Data Science & Statistics by ♦GaussTheBot Diamond (44,867 points) | 172 views

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Determine the general solution of $3 \sin x=2 \tan x$

asked Jul 20, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 81 views

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What does it mean to measure something upto the nearest millimetre?

asked Jul 18, 2022 in Mathematics by ♦MathsGee Diamond (88,926 points) | 149 views

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Define \[ f(x)=\int_{x}^{x+1} \sin \left(t^{2}\right) d t \] Prove that $|f(x)|<1 / x$ if $x>0$.

asked Jul 5, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 70 views

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If \[ I(x)= \begin{cases}0 & (x \leq 0) \\ 1 & (x>0)\end{cases} \]

asked Jul 5, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 85 views

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Show that \[ \frac{d^{3} u}{d x^{3}}-u \frac{d u}{d x}=0 \] admits the first integrals

asked Jul 2, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 68 views

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Let $C$ be a real constant. Show that the differential equation $d^{2} u / d x^{2}+u=C$ admits the particular solution $u(x)=C$.

asked Jul 2, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 61 views

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Let $C$ be a real number. Show that the differential equation $d^{2} u / d x^{2}+u=C$ admits the particular solution \[ u(x)=C . \]

asked Jul 1, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 73 views

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Consider the Riccati equation \[ \frac{d u}{d t}=c_{2} u^{2}+c_{1} u+c_{0} \] where $c_{0}, c_{1}, c_{2}$ are constants. Show that $v(t)=1 / u(t)$ also satisfies a Riccati equation.

asked Jul 1, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 67 views

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Show that $\left(u_{0}>0\right)$ \[ u(t)=u_{0} \cosh \left(t / u_{0}\right) \] satisfies the differential equation

asked Jul 1, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 79 views

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Calculate \[ \exp \left(t x^{3} \frac{d}{d x}\right) x \]

asked Jul 1, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 72 views

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Show that the differential equation \[ \frac{d u}{d x}=(-u \sin x+\tan x) u, \quad u(\pi / 6)=\frac{2}{\sqrt{3}} \] admits the solution ...

asked Jul 1, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 73 views

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Define a function $u(x)$ (the inverse error function) \[ x=\frac{2}{\sqrt{\pi}} \int_{0}^{u} \exp \left(-t^{2}\right) d t \] and show that it satisfies the differential equation

asked Jul 1, 2022 in Mathematics by ♦GaussTheBot Diamond (44,867 points) | 88 views

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Time period $(T)$ of a simple pendulum is given by $T-2=\sqrt{\frac{T}{g}}$. If experimental error in determination of $g$ is $2 \%$ and $3 \%$ respectively, then error in determination of time period is

asked Jun 22, 2022 in General Knowledge by ♦MathsGee Diamond (88,926 points) | 116 views

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The time period 'T' of a simple pendulum of length 'l' is given by $T=$ $2 \pi \sqrt{\frac{l}{g}}$.Find the percentage error in the value of ' $\mathrm{T}$ ' if the percentage error in the value of 'l' is $2 \%$.

asked Jun 22, 2022 in General Knowledge by ♦MathsGee Diamond (88,926 points) | 146 views

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If the time period of a simple pendulum is $T=2 \pi \sqrt{l / g}$, then the fractional error in acceleration due to gravity is

asked Jun 22, 2022 in General Knowledge by ♦MathsGee Diamond (88,926 points) | 118 views

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Deviation error of the magnetic compass is caused by

asked Jun 19, 2022 in General Knowledge by pilot_H Wooden Status (493 points) | 276 views

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Under what condition is indicated altitude the same as true altitude?

asked Jun 19, 2022 in General Knowledge by pilot_H Wooden Status (493 points) | 235 views

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What is pressure altitude?

asked Jun 19, 2022 in General Knowledge by pilot_H Wooden Status (493 points) | 144 views

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For regression problems which loss functions can i use?

asked Mar 17, 2022 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 189 views

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Suppose that \[ f(x)= \begin{cases}e^{-1 / x^{2}} & \text { if } x \neq 0 \\ 0 & \text { if } x=0\end{cases} \]

asked Feb 1, 2022 in Mathematics by ♦MathsGee Diamond (88,926 points) | 170 views

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What is sampling error?

asked Jan 12, 2022 in Data Science & Statistics by ♦GaussTheBot Diamond (44,867 points) | 171 views

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What is a Type II error in hypothesis testing?

asked Dec 16, 2021 in Data Science & Statistics by ♦GaussTheBot Diamond (44,867 points) | 362 views

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What is a Type I error in hypothesis testing?

asked Dec 16, 2021 in Data Science & Statistics by ♦GaussTheBot Diamond (44,867 points) | 279 views

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Use this information to update the error rate probability distribution and hence determine whether your advice needs amendment.

asked Nov 16, 2021 in General Knowledge by ♦MathsGee Diamond (88,926 points) | 189 views

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Let $\Delta x$ be the uncertainty in the measurements of position and $\Delta p$ the uncertainty in measurement of momentum. The uncertainty principle relation is given as

asked Nov 10, 2021 in General Knowledge by ♦MathsGee Diamond (88,926 points) | 200 views

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Let $X$ be a continuous random variable with p.d.f: \[ f(x)= \begin{cases}a x, & 0<x \leq 1 \\ a, & 1 \leq x \leq 2 \\ -a x+3 a, & 2 \leq x \leq 3 \\ 0, & \text { otherwise }\end{cases} \]

asked Oct 16, 2021 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 310 views

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Factor the following polynomials as a product of two other polynomials of smaller degrees: (a) $x^{10}+x^{5}+1$ (b) $x^{8}+x^{4}+1$

asked Aug 9, 2021 in Mathematics by ♦MathsGee Diamond (88,926 points) | 252 views

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How do the standard error and the margin of error relate?

asked Jul 23, 2021 in Data Science & Statistics by Student Bronze Status (5,662 points) | 195 views

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What new ideas about mathematics have you learnt recently?

asked Jun 14, 2021 in Mathematics by ♦MathsGee Diamond (88,926 points) | 150 views

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Carry out a test of significance for $H_{0}: \mu=40 \mathrm{hrs}$ vs $H_{1} \mu>40 \mathrm{hrs} . \alpha=0.05$

asked Jun 14, 2021 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 166 views

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Find the density that will maximize the hourly flow.

asked Jun 11, 2021 in Mathematics by ♦MathsGee Diamond (88,926 points) | 176 views

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If $|z+4| \leq 3$ then the maximum value of $|z+1|$ is

asked Jun 9, 2021 in Mathematics by ♦MathsGee Diamond (88,926 points) | 295 views

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Let $f(x)=(x+1)^{2}-1, x \geq-1$

asked Jun 9, 2021 in Mathematics by ♦MathsGee Diamond (88,926 points) | 182 views

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What is systematic sampling?

asked Jun 1, 2021 in Data Science & Statistics by ♦Maths Genie Bronze Status (7,913 points) | 314 views

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What are some of the response error types in statistical data collection?

asked Jun 1, 2021 in Data Science & Statistics by ♦Maths Genie Bronze Status (7,913 points) | 349 views

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Harley surveyed his classmates about how many siblings they have and got the following data: $0,1,3,5,4,2,2,9,1,2,0,1,1,1,1,3$ Which measure is best measure of center of the data?

asked May 31, 2021 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 353 views

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Suppose $X$ is $\mathrm{N}\left(\mu, \sigma^{2}\right)$. For $a=1,2,3$ find $P(|X-\mu|<a \sigma)$.

asked May 30, 2021 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 284 views

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Suppose $X$ is $\mathrm{N}(-1,4)$. Find

asked May 30, 2021 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 211 views

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Suppose $X$ is $\mathrm{N}(10,1) .$ Find (i) $P[X>10.5]$, (ii) $P[9.5<X<11]$, (iii) $x$ such that $P[X<x]=0.95$.

asked May 30, 2021 in Data Science & Statistics by ♦MathsGee Diamond (88,926 points) | 326 views

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