## Dangerous Math: Death by Snake, Spider, Quad bike, Kangaroo, Raccoon and Vomit

November 17, 2022

It’s almost summer in Australia. In Melbourne we’ve had floods, mosquito – mozzie- numbers surge and, last Wednesday, I nearly stood on a Tiger Snake that was escaping the floods near the Yarra River!

This post, however, is really a PR exercise for sharks. We fear them. We’re horrified by the thought of being eaten alive!!!. We only have to hear the soundtrack from JAWS to feel the fear. Then we see news footage like the attack below and think it happens all the time. Look at that fin. It’s enormous! But sharks are not THAT dangerous. We really need to look at the statistics to understand the level of threat. See below.

Why do we fear sharks? Look at the numbers. REALLY. Show your students. What about stairs??? Quad bikes? Chairs? Bees? That’s when you should feel the fear!!! We are irrational beings. This is why we need maths. We can make rational decisions using maths. There is also a safety message here. The maths speaks for itself. We won’t hammer it.

# THE MATHS:

There is lots of maths you can do with these tables.

• Bar Graphs
• Pie Charts
• Ratios (What’s the ratio of death by Snake to Quad Bike?)
• Fractions (Show death by jet ski to falling down stairs as a fraction)
• Percentages
• Powers to the base 10. How many deaths occur in each country per 100,000 or 1 x 10head of population for, say, Quad bikes or ATVs? We can use these numbers to compare death rates and find out how dangerous riding a Quad bike is in each country.

……..Population Data 2022

……..Aust…26 million = 26 x 106

……..USA…332 million = 332 x 106

……..Canada…38 million = 38 x 106

……..UK…67 million = 67 x 106

But we’re doing this for the SHARKS!!!

1. Cyclists. 2. emergency lanes 3. fell off a chair 4.QUAD BIKES. 5. Horse, donkey. 6. buses 7. Cow, bull. 8. ice skates, skis or skateboards. 9. Venemous snake 10. kangaroo 11. bee 12. emu 13. Jet ski 14. Shark 15. Crocodile

1. Quad Bike or ATV: In 2007, 107 children younger than 16 were killed on ATVs. 2. Cyclists 3. choke on vomit  4. Cats, cows, horses, pigs, raccoons. 5. Bees, wasps  6.PWC or Jet Ski 7. Lightning 8. Xmas tree fires 9. Snowboard 10. Venomous Spider  11. Scorpions 12. Venomous Snakes , lizards. 13.Crocs & gators  14. Shark

1. ATV Quad Bike 2. Canoe  3. Kayak 4. PWC or Jet Ski  5. Unpowered inflatable 6. Avalanches or landslides. 7. Lightning 8. Toboggan 9. Moose –Car collision 10. Bears (All Nth America) 11. Rattle Snake 12. Wolves 13. Shark

1. falling down stairs.  2. Cyclists.  3. Choke on vomit   4. Falling off Chairs 5.  QUAD BIKE or ATV 6. Buses 7. Struck by cow, horse, other mammal 8. hornets, wasps, bees. 9. PWC or jet ski .10. Parachutists. 11. Skateboards, ice skates, skis 12. Canoe. 13. Shark

May 14, 2019

# Grizzly Bear

Weight:  550 lb

Height:  8’ 2”

Top Speed: 35 mph  =   51 ft/s

# Brown Bear

Weight:  1,500 lb

Height:  8’ 2”

Top Speed: 22 mph  =  32 ft/s

Comparing these speeds to the fastest man on earth, Usain Bolt:

## Usain Bolt:

Top speed: 27 mph  =   40 ft/s

# Bears are not dangerous:

………………………………………………………………………

In fact, more Americans die each year from choking on their own vomit than are killed by bears.

More death stats here

Nevertheless, bears are very fast. So you can see why Park Rangers offer the following advice:

The reason for waiting until the bear is 15 ft away is to make sure the spray doesn’t disperse in the air. If the Pepper Spray is too spread out it will not stop the bear.

May 4, 2018

April 30, 2018

April 23, 2018

March 5, 2018

# Ben Zauzmer

Ben Zauzmer, a Harvard Applied Math graduate who has a 75 per cent success rate in predicting the winners of Oscar Awards every year, has correctly predicted 20 of 21 winners in 2018 Oscars, which is a success rate of 95%.

How does he do it? He gathers thousands of data points on Oscar ceremonies over the past two decades – such as categories movies are nominated in, other award results, and aggregate critic scores – and he uses statistics to calculate how good a predictor each of those metrics is in each Oscar category. Then, he plugs in the numbers and that gives him the % chance that each film will win in each category according to  the Boston Globe.

Ben, who writes for The Hollywood Reporter, uses his mathematical model to produce  Bar Graphs like this:

This year the Best Picture was a close call, but Ben’s Mathematical Prediciton was correct.

January 12, 2018

# UK                  None EVER

More deaths occur due to falling off chairs in Australia. Quad bikes are deadly anywhere.

Full Stats and references here.

Meanwhile,  you see a shark fin. You can swim BUT what distance do you need to be from the shark to make it to the beach.

You will find some interesting maths here.

## 3. If you put the population of the world into Australia what area would we get each?

November 13, 2017

July 17, 2017

# Grizzly Bear

Weight:  550 lb

Height:  8’ 2”

Top Speed: 35 mph  =   51 ft/s

# Brown Bear

Weight:  1,500 lb

Height:  8’ 2”

Top Speed: 22 mph  =  32 ft/s

Comparing these speeds to the fastest man on earth, Usain Bolt:

## Usain Bolt:

Top speed: 27 mph  =   40 ft/s

# Bears are not dangerous:

………………………………………………………………………

In fact, more Americans die each year from choking on their own vomit than are killed by bears.

More death stats here

Nevertheless, bears are very fast. So you can see why Park Rangers offer the following advice:

The reason for waiting until the bear is 15 ft away is to make sure the spray doesn’t disperse in the air. If the Pepper Spray is too spread out it will not stop the bear.

## Dangerous Maths 1:Young drunk dead

August 26, 2015

Statistics for alcohol consumption are tricky. Binge drinking gets confused with heavy drinking. If you want to stay young go to the UK. They think anyone under 35 is a youth! Some stats separate Male and Female drinking habits. Some don’t. And legal drinking ages vary. Canada is one crazy place. It has different legal drinking ages in different parts of the country.

# The Maths

What we are working on here is reading maths data. No lectures. The numbers speak for themselves.

Graph source here

# The Challenge

Find the following information from data below. Percentage of Year 12 students or 18 year olds who binge drink in each country below.

# 1. Australia

Graph Source here.

Graph Source here.

## 3. UK

Graph Source here

## 4. USA

Graph source here

# Use these % to create a bar graph comparing countries. (Answer below)

Graph drawn using Create a Graph website

Alcohol related death stats over lap other stats including death involving cars, motorcycles, bicycles, skateboards, jet skis, quad bikes, drowning, diving, stairs, supermarket trolleys and even high heels.

photo source Daily Mail