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KhanAcademyExercises

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New exercises from Khan Academy 2020-09-17T17:04:09.000000
Atualizado: 2 horas 34 minutos atrás

Cole's The Oxbow

qui, 2020-09-17 17:04
Test your knowledge.

Representations of reactions

qua, 2020-09-16 23:58
Practice identifying and interpreting particulate models of reactions in this set of free questions designed for AP Chemistry students.

Identifying outliers

qua, 2020-09-16 22:29
Practice identifying outliers using the 1.5*IQR rule.

Calculating the test statistic in a t test for a mean

qua, 2020-09-16 21:51
Practice calculating the test statistic in a one-sample t test for a mean

Conclusions in observational studies versus experiments

qua, 2020-09-16 21:36
Practice determining what conclusions we can draw from a study based on it being an observational study or an experiment.

Shape of sampling distributions for differences in sample means

qua, 2020-09-16 21:06
Practice using the Central limit theorem to determine when sampling distributions for differences in sample means are approximately normal.

Mean and standard deviation of difference of sample means

qua, 2020-09-16 21:05
Practice calculating the mean and standard deviation of sampling distributions for differences in sample means.

Shape of sampling distributions for differences in sample proportions

qua, 2020-09-16 21:05
Practice using the large count condition to determine when sampling distributions for differences in sample proportions are approximately normal.

Mean and standard deviation of a binomial random variable

qua, 2020-09-16 21:04
Practice calculating the mean and standard deviation of a binomial random variable.

Sampling methods

qua, 2020-09-16 20:58
Practice identifying which sampling method was used in statistical studies, and why it might make sense to use one sampling method over another.

Effects of influential points

qua, 2020-09-16 20:57
Practice thinking about how influential points can impact a least-squares regression line and what makes a point “influential.”

Prove triangle congruence

qua, 2020-09-16 18:23
Given figures composed of 2 triangles, complete or find the error in the proof that the triangles are congruent.

The divergence theorem

qua, 2020-09-16 18:11
Translate between surface integrals of flux and triple integrals of divergence using the Divergence Theorem.

Stokes' theorem

qua, 2020-09-16 18:11
Given a surface, boundary curve, and 3D vector field, convert between surface integrals and line integrals using Stokes’ theorem. (Or is Stokes’ theorem not applicable in this case?)

Orientations and boundaries

qua, 2020-09-16 18:11
Find a boundary curve to a surface and determine its orientation with respect to the orientation of the surface.

Normal form of Green's theorem

qua, 2020-09-16 18:11
Given a closed path and a vector field, what is the integral representing the flux out of the region using the normal form of Green’s theorem?

Circulation form of Green's theorem

qua, 2020-09-16 18:10
Given a double integral, simplify it into a line integral using Green’s Theorem.

Simple, closed, connected, piecewise-smooth practice

qua, 2020-09-16 18:10
Given a region (or curve), is it simply connected (or simple, closed, and piecewise-smooth)? Yes, no, or there’s not enough information to tell.

Surface integrals to find surface area

qua, 2020-09-16 18:09
Given a parameterized surface, find the surface area.

Find area elements

qua, 2020-09-16 18:09
Given a surface in 3D, find the area element at a certain point.

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