What's a stick?

Logic Level 2

A survey was conducted on different age groups to determine whether more people prefer cars with automatic transmission or manual transmission.

	Age 16 to 21	Age 22 to 30	Age 31 to 50	Age 51 and higher
Automatic	90% of 100 people	60% of 200 people	50% of 300 people	50% of 400 people
Manual	80% of 400 people	40% of 300 people	40% of 200 people	40% of 100 people

According to the survey result above, what is the conclusion?

Image Credit: Flickr Sophie .

More people prefer cars with automatic transmission. More people prefer cars with manual transmission. There is no difference.

2 solutions

Brock Brown
Sep 18, 2015

Python 3.4:

# pairs represent (percent_of_people, total_people)
automatic = [(0.9, 100), (0.6, 200), (0.5, 300), (0.5, 400)]
manual = [(0.8, 400), (0.4, 300), (0.4, 200), (0.4, 100)]
prefer_automatic = sum([i[0] * i[1] for i in automatic])
prefer_manual = sum([i[0] * i[1] for i in manual])
if prefer_automatic == prefer_manual:
    print ("There is no difference.")
elif prefer_automatic > prefer_manual:
    print ("More people prefer automatic.")
else:
    print ("More people prefer manual.")

Did you just copied from my pastebin? This is exactly how I've done it!

Pi Han Goh - 5 years, 8 months ago

I did, actually: http://pastebin.com/5EYhN9JG

Brock Brown - 5 years, 8 months ago

Jerry Christensen
Oct 1, 2018

Simple arithmetic

For automatic: 0.9(100)+0.6(200)+0.5(300)+0.5(400)= 560

For manual: 0.8(400)+0.4(300)+0.4(200)+0.1(100)= 560

So therefore, equal ammounts of people overal like the types

Yup, I'm glad you see through the ruse. It's kinda hard to find the numbers to make them equal.

Pi Han Goh - 2 years, 8 months ago

What about the rest of the samples. For example the 10% from first group of age 16-21 do they simply stay neutral?

Ashot Melkonyan - 5 months, 1 week ago

What's a stick?

Image Credit: Flickr Sophie .

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