- #1
freedomdorm
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I like Serena said:
Hello,
If the lowest class limit is 0-9 then how do I figure out the frequency, Midpoint, Relative frequency, and cumulative frequency?
MHB Calculating Frequency, Midpoint, Relative Frequency and Cumulative Frequency
AI Thread Summary
To calculate frequency, midpoint, relative frequency, and cumulative frequency for the class intervals 0-9, 10-19, 20-29, 30-39, and 40-49, start by determining the number of data points that fall within each range to establish frequency. The midpoint for each class can be found by averaging the lower and upper limits of the intervals. Relative frequency is calculated by dividing the frequency of each class by the total number of data points. Cumulative frequency is obtained by adding the frequency of each class to the sum of the frequencies of all preceding classes. This structured approach allows for effective data analysis within the specified ranges.
Hi,
I was watching the following video. I found some points confusing. Could you please help me to understand the gaps? Thanks, in advance!
Question 1:
Around 4:22, the video says the following.
So for those mathematicians, negative numbers didn't exist. You could subtract, that is find the difference between two positive quantities, but you couldn't have a negative answer or negative coefficients. Mathematicians were so averse to negative numbers that there was no single quadratic...
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles.
In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra
Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/
by...
Here I made a terrible mistake of assuming this to be an equilateral triangle and set 2sinx=1 => x=pi/6. Although this did derive the double angle formulas it also led into a terrible mess trying to find all the combinations of sides. I must have been tired and just assumed 6x=180 and 2sinx=1. By that time, I was so mindset that I nearly scolded a person for even saying 90-x. I wonder if this is a case of biased observation that seeks to dis credit me like Jesus of Nazareth since in reality...
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