Lab1

First homework

This homework was just about to get familiar to R syntax

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Let the vector x = (1, 8, 2, 6, 3, 8, 8, 5, 5, 5). Use R to calculate the following functions:

1. (x1 + x2 + ··· + x10) / 10
2. Find log2 (xi) for each i = 1, · · ·, 10
3. Find the difference between the largest and the highest, and its lowest value
4. Finds = (xi - 5.1) /2.514403 for each i = 1, · · ·, 10
5. Calculated, and media, I deviated, the standard vector of y = (y1, y2, y1, y10)

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The bill of your mobile varies monthly. Suppose that last year we paid the following values monthly:

46 33 39 37 46 30 48 32 49 35 30 48

Enter these values ​​into a variable called invoice. Use a small amount to find the amount annual mobile phone bill last year. What is the lowest value paid in a month? Which is the largest? How many months does the invoice exceed 40? What was the percentage of the bill? What about the total bills?

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Reading on a keyboard a vector contains 6 real numbers:

1. Calculate the maximum, minimum, average, median, and standard deviation corresponding to the readings
2. Sort the read vector
3. Standardize the vector above