1.
How would you write a simple computer program to compute the mean and 
standard deviation of a group of N numbers

2.
How would you write a simple computer program to place these N numbers in order.

Could you do this without having to write a computer code ?  Think Unix.


3.
Write a computer code to find the max and min of those N numbers.

4.
Given the following pair x,y: (3,2) (5,9) (0,3) (9,1)
plot y=f(x)

5.
Compute the std deviation of x and y

6.
Would you know how to plot the straight line that best fit the pairs of
numbers in (4) ?  If the answer is yes, how would you do it ?

7.
What is the fundamental condition to compute the straight line that best
fit these pair of numbers ?

8.
We have the function y=x^2 and 3<x<6.  How would you compute 
the area below y=x^2 and above y=0 between 3<x<6 analytically ?

9.
How would you solve the same problem but numerically using steps of x=0.1 ?

10.
How would you compute the gradient along x of y=a+b*x^2 ?

11.
If you want to measure a signal that has a strong daily variability,
how often do you need to make an observation to fully resolve it ?

12.
Write the time series y(t)=sin(t)   between t=0,9*pi and plot it.

13.
Create a plot with the surface given by the function z(x,y,t)=2x-2y+t, 
beween x=0,100 ; y=-100,100 ; t=0,50

14.
Write a computer program that plots a global map and draw a cross at 
the following locations: (4N,5W) (0,0) (30S,20E)

15.
You have two time series with time intervals of 10 seconds.  You need to paste one
series next (not after) another.  How would you do this ?

16.
You have z=f(x,y). Do you think that this is enough information to
create a plot of the gradient of this field ? 

17.
What parameters control the density of sea water ?

18.
Where would you find the most dense waters in the ocean ?  In the
tropics or in high latitudes.  In the surface or in the bottom ?

19.
Do you know what drives ocean currents ?

20.
Where do you see yourself in two and in five years ?