It's not that hard to open a hospital in another world, right?

Chapter 860 I want to build a 21-story mage tower!

After optimizing the working method, the progress of scanning and recording has been rapid.In the evening of the next day, Gretel sat in the center of the Mage Tower, frowning as he watched the information pulled out by MOSS.

—The situation is very bad.

The April Flower has a displacement of 180 tons, 30 crew members and 105 passengers.There were 26 crew members and 102 passengers who landed.The crew fatality rate was 13%, and the passenger fatality rate was 3%.

The Silver Deer has a displacement of 150 tons, a crew of 25 and passengers of 58.There were 23 crew members and 54 passengers who landed.The crew fatality rate was 8%, and the passenger fatality rate was 6.9%.

The St. Marianne has a displacement of 300 tons, a crew of 48, and passengers of 287 crew members and 41 passengers landed.The crew fatality rate was 244%, and the passenger fatality rate was 14.5%.

The Brig, with a displacement of 400 tons, had a crew of 58 and 450 passengers.Arrived 50 crew members, 332 passengers.The crew fatality rate was 13.7%, and the passenger fatality rate was 26%.

All in all, the crew death rate was relatively constant, between 10% and 15%.The death rate does not increase with the increase in the number of passengers. It is speculated that it is related to the wind and waves of sea navigation and distress during operation;
Passenger fatality rate, however, shows a fairly obvious rise with the increase of passengers/tonnage.

"MOSS, calculate the passenger/tonnage of each cargo ship, and the passenger death rate. Take the passenger/tonnage as the vertical axis and the passenger death rate as the horizontal axis to draw a scatter plot."

"Boss, what is a scatter plot?"

"It is to mark the corresponding data position of each cargo ship on the coordinate axis. For example, the April Flower should be marked here..."

Gretel used [Silent Phantom] to outline the coordinate axis, mentally calculated the number of passengers/tonnage, and clicked a point on the coordinate axis. MOSS was silent for about a second, then responded:
"Understood, boss."

On the light screen, a coordinate axis that Gretel was familiar with was quickly pulled away. X-axis, Y-axis, calibration value, start to smear black dots one by one.One two, five ten, twenty thirty thirty fifty...

The speed of growth soon reached the point where intensive phobia would cause goose bumps all over the body at a glance.

And these dense black dots, in the first quadrant of the coordinate axis, outline a giant python with its head raised upwards.

Probably, maybe, almost, the fatality rate starts to rise sharply above 0.9 passengers/tonnage, and stabilizes above 1% when passengers/tonnage exceeds 20...

20%!
Gretel once heard a reviewer mention that in this catastrophe, the mainland of the Kingdom of Kent will probably transfer 20 people to the New World.And as far as Grete saw on Aioland Island, the kind of transfer conditions where everyone is crowded in the bottom cabin and densely packed...

At least, the tonnage of the ship that Gretel took when he came back was less than 300 tons.As for the passengers crowded in the bottom deck, if you just scan them, you will know that there are definitely more than 300 people.

You don't even need to calculate it carefully, the number of passengers/tonnage must exceed 1.

——That is to say, 20 people, 20 victims of starvation, will die 20% during the two-month long one-way journey!

40,000 people died!
Just thinking of this made Gretel shudder. 40,000 people, 20% death rate, if it can be reduced to 10%, or even 5%...

Even if it drops to 5%, in his concept, it is still ridiculously high.What, a sea trip will kill 5% of the people?The risk of this trip is too high, totally unacceptable!

However, even if it drops to 5%, among the 40,000 people, 30,000 people can already survive.

——Saving a life is better than building a seven-level pagoda. This time, I, Wu Great Nordmark Zhou, will build a mage tower with 21 floors!

Of course, how to reduce the mortality rate depends on the data.Gretel took a closer look at the scatter plot and was not too satisfied.

The giant python is thick in the middle, sparse in the surrounding area, scattered, densely covered with many black spots, and only the general trend can be seen.How much can the number of passengers/tonnage be reduced to reduce the death rate to 5%? 0.9? 0.8?Or 0.7?

——This depends on more precise calculations.

——In other words, this scatter plot should be made into a fitting curve.A smooth curve is far easier to see than densely packed scatter plots floating around.

... Broken, how to fit the curve?How should regression analysis be done and which formula should be applied?

I have learned this stuff, I have learned it, and I have used it in writing papers.The problem is that I don't use it many times after work, and I need to use it every time, and I turn back to the book on the spot.Traveling through the past few years, I haven't used it for a long time, and I kind of forgot...

Gretel scratched his head, finally spread out the pen and paper, and honestly reviewed university mathematics and medical statistics.After tossing for a long time, it was very easy to filter out the required formulas, and then waste infinite saliva, and teach MOSS to understand——

After several adjustments, a smooth curve finally appeared on the light screen projected by MOSS.

"0.7..."

Gretel frowned, with his hands behind his back, pacing back and forth in front of the light screen.According to this curve, if the fatality rate is to be reduced to 10%, the passenger/tonnage ratio should be below 0.9; and if the mortality rate is to be reduced to 5%, then the ratio must be below 0.7.

And if the ratio of the boats carrying disaster victims is generally above 1, it means that the parliament needs to pay an additional 50% of the freight to transport these people away.What is more troublesome than the freight is the capacity——

There are only so many ships that can travel to the New World, and there are only so many captains and skilled sailors that can travel to the New World.Change, if it cannot be changed, the disaster victims cannot be transported in time, and the backlog will be accumulated in the kingdom, and there will be more additional problems...

What else can be done?
Is there any way to reduce their death rate?

Gretel unconsciously fingered a logbook.Thanks to the regulations of the parliament, every death on board must be checked by the ship's doctor, the cause of death must be recorded, and the captain's signature must be certified.

This makes the cause of death of the logbook relatively reliable, at least, it will not be falsified in unnecessary places...

"MOSS, count the causes of death of all crew members and passengers, and the proportion of deaths due to this cause." He took a long breath and ordered in a deep voice. MOSS fell silent all of a sudden, and after a long time, a light curtain was displayed:
"Fever, nervous fever, biliary fever, pleuritic fever, purulent fever, malignant fever, severe fever, relieved fever, acute fever, diarrhea, dysentery, worms, diarrhea, dry abdominal pain..."

"Stop, stop, stop, stop!"

Gretel quickly stopped.Hey, different temples, different description methods and judgments, as well as records left by pharmacists, herbalists, barbers, carpenters, who knows who served as ship doctors, really make people want to vomit!

"From fever to acute fever, all are defined as fever. From diarrhea to dry abdominal pain, all are defined as gastrointestinal diseases." He reluctantly ordered.Alas, despair, there is too little information, and it can only be classified in this simple way...

MOSS buzzed for a while, the light screen shook, merged, and refreshed again.The cause of death this time finally made Gretel feel better, and his blood pressure was not so high.

"Fever, gastrointestinal disease, respiratory disease, scurvy, drowning, fall, mutiny, other, unspecified..."

Gretel watched intently.In terms of the overall death rate, gastrointestinal diseases accounted for 28%, and scurvy accounted for 15%, covering the top two causes of death.

"Moss, count the number of passengers/tonnage, every time there is an increase of 0.1. Count each rank and cause of death separately!"

This time, the data was surprisingly encouraging.When the number of passengers/tonnage reaches above 0.9, the death probability of gastrointestinal diseases reaches 48%!

That is to say, under such conditions, clean food and drinking water can be provided as much as possible, vegetables and sodium ascorbate can be properly supplied, and basic medicines can be provided if possible.In this way, the mortality rate can be reduced by an additional 63%!

In this way, the fatality rate of passengers can be kept below 5%... 30,000 people can be saved!

I made this 21-story mage tower!
****
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　1847 was a year full of disasters.About 20 percent of those who emigrated to the United States as a result of the famine that year died en route or upon arrival.In other words, 4 people died, and most of them were strong men in their prime of life.In contrast, when British ships brought African slaves to the United States in the 19th century, the death rate on the way was only 9%.

　　——Excerpt from the notes of Rainbow on the Snow Mountain to "A Brief History of Race in America"
　　I...I don't know what to say...Should I say that the British are too immoral, or should I say that the black slaves are too vigorous?
　　
　
(End of this chapter)