Page 161 - Data Science Algorithms in a Week

Regression

Month of using the cloud storage Monthly bill in euros

1 120.0
2 131.2
3 142.1

4 152.9
5 164.3

1 to 12 ?

2. Fahrenheit and Celsius conversion: In the earlier example, we devised a formula
converting degrees Fahrenheit into degrees Celsius. Devise a formula converting
degrees Celsius into degrees Fahrenheit.
3. Flight time duration prediction from the distance: Why do you think that a
linear regression model resulted in the estimation of the speed to be 1192 km/h as
opposed to the real speed of about 850 km/h? Can you suggest a way to a better
model of the estimation of the flight duration based on the flight distances and
times?
4. Bacteria population prediction: A bacteria Escherichia coli has been observed in
the laboratory and the size of its population was estimated by various
measurements at 5-minute intervals as follows:

Time Size of population in millions

10:00 47.5
10:05 56.5

10:10 67.2
10:15 79.9
11:00 ?

What is the expected number of the bacteria to be observed at 11:00 assuming that the
bacteria would continue to grow at the same rate?

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