163 results for "sum".

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• Summation notation 3
Question

Practice use of summation notation for regression question.

rebelmaths

• Question in Stats

This question assesses learners' ability to:

- construct a confidence interval for a proportion given corresponding summarised data;

- predict the sample size required to limit the margin of error to a given value.

• BR sum of place value
Question

• Question

Add three vectors by determining their scalar components, summing them and then resolving the rectangular components to find the magnitude and direction of the resultant

• Question

Find the sum of two couples in a plane.

• Question

Find the sum of two 2-dimensional vectors, graphically and exactly using the parallelogram rule.

• Question

Add three vectors by determining their scalar components, summing them and then resolving the rectangular components to find the magnitude and direction of the resultant.

• Exam (9 questions) in Koutilya

This is for the Summer Bridge Course in Mathematics . This exam will test their previous knowledge.

• Energy- PIAB
Question
Question requires students to themselves calculate how many electrons are in the conjugated system for the molecules included in this question. As is standard for applications of the "particle in a box" model, the embedded assumption is that one electron is donated to the pi-system by each carbon within the conjugated chain. Students instructed to assume that there are 22 conjugated electrons in Beta-carotene.
• Question in HSS8005

No description given

• Question

No description given

• Question in STAT7008

rebelmaths

Printing errors in the work produced by a particular film occur randomly at an average rate of p per page.

i.What is the probability that a one page document will contain x1 printing error(s)?

ii.If a n page document is printed, calculate the probability of having more than x2 errors. Assume a Poisson distribution.

• Exam (2 questions) in How-tos

This exam turns off all the feedback options, so students know nothing about how they've done.

• Question

Calculations of the lengths of two 3D vectors, the distance between their terminal points, their sum, difference, and dot and cross products.

• Elementary operations on vectors; sum, modulus, unit vector, scalar multiple.

• Question

Minitab was used to fit both an AR(1) model and an AR(2) to a stationary series. A  table is given summarising the results obtained from Minitab. Choose the most appropriate model and make a forecast based on that model.

• Question

Approximating integral of a quadratic by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.

• Question

Approximating integral of a quadratic by Riemann sums . Will include an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.

• Question

No description given

• Question

Given sum of sample from a Normal distribution with unknown mean $\mu$ and known variance $\sigma^2$. Find MLE of $\mu$ and one of four functions of $\mu$.

• Question

Finding probabilities from a survey giving a table of data on the alcohol consumption of males. This can be easily adapted to data from other types of surveys.

• Question

Approximating integral of a quadratic by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.

• Question

Approximating integral of a linear function by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.

• Question

Approximating integral of a linear function by Riemann sums . Includes an interactive graph in Advice showing the approximations given by the upper and lower sums and how they vary as we increase the number of intervals.

• Question

Uses the $\chi^2$ test to see if there is any significant difference in preferences.

• Question

Find a regression equation.

• Riemann sums
Draft
Exam (4 questions)

Approximate the integral of a function by Riemann sums.

• Question

Simple probability question. Counting number of occurences of an event in a sample space with given size and finding the probability of the event.

• Question

Power series solution of $y''+axy'+by=0$ about $x=0$.

• Question

Two ordered data sets, each with 10 numbers. Find the sample standard deviation for each and for their sum.