Welcome to H3 Maths

Blog Support for Growing Mathematicians

Posts tagged with data

A good education too complex to be reduced to a single number

September23

From CNN: The scandal engulfing Columbia University and U.S. News & World Report rose to a new level last week, when Columbia acknowledged that some of the figures it had submitted last year to U.S. News were inaccurate. U.S. News initially removed Columbia from its ranking entirely, then demoted it from second to 18th place […]

by posted under Uncategorized | tagged under , , , , , , , , , , , ,  |  Comments Off on A good education too complex to be reduced to a single number

Old Style Tennis Data

June29

As Wimbledon got under way last Monday, data analysts are supporting the world’s top players. Their practice is widespread in elite tennis. Some players pay lucrative sums to specialist companies and the quest for any kind of edge is intense. But compared to other major sports such as baseball or football this has all happened relatively […]

by posted under Uncategorized | tagged under , , , , ,  |  Comments Off on Old Style Tennis Data

Data Explosion, but where is it all Stored?

June22

Some 500 hours’worth of video is uploaded every minute to Google-owned video sharing platform YouTube. Every year, tweets, social media posts, online banking and the rest produce an aggregate number of digital bits equivalent to ten with 21 zeros after it. The digital footprint is so large that it is difficult to comprehend. Melvin Vopson of […]

by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Data Explosion, but where is it all Stored?

Algorithms are not Al-ways right!

August24

Philip is among 300,000 pupils in England, Wales and Northern Ireland who woke on August 13 to critically important A-level exam results. These exams were cancelled this year due to the pandemic. Student marks were instead determined by an algorithm, which was chosen by the government’s exam regulator. The model drew on a collection of data […]

by posted under Uncategorized | tagged under , , , , , , , , ,  |  Comments Off on Algorithms are not Al-ways right!

Coronavirus epidemic, by the numbers

March9

A mathematician who studies the spread of disease explains some of the figures that keep popping up in coronavirus news. Adam Kucharski studies how diseases spread, but he’s not handling viruses in the lab ortreating sick people in the hospital. He’s a mathematician at the London School of Hygiene & Tropical Medicine, and he uses […]

by posted under Uncategorized | tagged under , , , , , , , , ,  |  Comments Off on Coronavirus epidemic, by the numbers

99 Phones for Artistic Look at Data Blindness

February5

Simon Weckert, who named his performance “Google Maps Hacks,” took to the streets of Berlin with a small red cart and a pile of second-hand phones, which he borrowed from friends and rented from smartphone companies. Walking on roads near the River Spree — which appear empty in footage he released on YouTube — Weckert […]

by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on 99 Phones for Artistic Look at Data Blindness

How we construct bar graphs in New Zealand

March28
by posted under Uncategorized | tagged under , , , , , , , , , ,  |  Comments Off on How we construct bar graphs in New Zealand

Wearing Striped Pyjamas depends on the heat?

February7

The Royal Society of Open Science examined how well 29 environmental variables predict the variation in stripe characteristics of zebras across their range of habitats in Africa. The patterns of zebra stripes have fascinated scientists for a long time but, until now, there has been no mathematical explanation for them. In contrast to recent findings, […]

by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on Wearing Striped Pyjamas depends on the heat?

Skew…

October29

“Skew” means “slant” or “leaning”. For example, looking at this picture of the Leaning Tower of Pisa (taken by H3 recently): We can say that the tower is “askew” or skewed” – it has an obvious lean to the right (from where the picture was taken – from some angles it doesn’t appear to lean […]

by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on Skew…

data storage progress…

August11
by posted under Uncategorized | tagged under , , , , ,  |  Comments Off on data storage progress…
« Older Entries

Post Support

Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

Archives

H3 Viewers



Skip to toolbar