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Helen Kirby


Last seen: 3 months ago |  Active since 2016

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My background and interests are Physics, Mathematics,Programming, Architecture. Educated in England to PhD level in Plasma Physics. Worked mainly in Silicon Valley, now semi retired. Very enthusiastic about MatLab because it summarizes everything I seem to have done over the years.

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Which Anova for this situation.
I am trying to analyze the speeds of vehicles driving over four different road conditions: Down a steep slope, up that steep slo...

6 years ago | 0 answers | 0

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answers

Answered
Read data from CSV and Excel
I had trouble with reading in a csv file. I found it easier to open XL, select "file", drag down to "import", import the csv fil...

6 years ago | 0

Question


Simple programming question about randomizing a vector.
clc clear ones = ones(1,20); twos = ones+1; thrs = twos+1; fors = thrs+1; fivs = fors+1; Nums = [ones...

7 years ago | 1 answer | 0

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answer

Question


Another simple question about standard deviation!
Could I ask yet another question on the theme of standard deviation? - and yes I have read the documentation and it doesn't an...

7 years ago | 1 answer | 0

1

answer

Answered
Simple question about Standard Deviation.
Could I ask yet another question on this theme - and yes I have read the documentation and it doesn't answer this question. Say...

7 years ago | 0

Question


Simple question about Standard Deviation.
I have a number of data points, lets say in a vector v, and lets say there are "num" of them. If I write sd = std(v) did it ass...

7 years ago | 2 answers | 0

2

answers

Question


Confused about a question in the "Fundamentals of ML" training course.
In section 6 of the "Fundamentals of ML" training course we calculated the speed of a star by measuring it's hydrogen absorption...

7 years ago | 0 answers | 0

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Answered
Can Matlab statistics toolbox look up z/t/z standard tables?
Thank you very much SS, that really helped.

7 years ago | 0

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Question


Can Matlab statistics toolbox look up z/t/z standard tables?
I recently plowed through how to do an ANOVA analysis. When I tried to do this via Matlab I found the calculated F quite easily ...

7 years ago | 2 answers | 0

2

answers

Question


How do you find Fcritical after an ANOVA analysis?
Using the Statistical Toolbox one does an ANOVA analysis to find F calculated (as well as some other stuff). One must then go on...

7 years ago | 0 answers | 0

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answers

Solved


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

8 years ago

Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

8 years ago

Solved


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

8 years ago

Solved


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

8 years ago

Question


When selecting "import data " to import my selection, I only get two options import data and generate script. How do I get the third one, "generate function"
I am importing data from excel spreadsheets and there is supposed to be a means of selecting a few columns then when you click o...

8 years ago | 0 answers | 0

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answers

Question


How do I get the workspace window back?
Suddenly my workspace window has disappeared. How do I get it back? It is usually in the top right of the screen. My programming...

8 years ago | 3 answers | 0

3

answers