To find $P(X \geq -2)$, we sum the probabilities of all values of $X$ that are greater than or equal to $-2$.

From the given data:

$P(X = -2) = 0.1$ $P(X = -1) = 0.2$

Now, summing these probabilities:

$P(X \geq -2) = P(X = -2) + P(X = -1)$

$= 0.1 + 0.2 = 0.3$

Rounding to one decimal place (though it's already in that form):

$\mathbf{0.3}$

Would you like a breakdown of probability concepts?

Related Questions:

1. What is the probability of $P(X \leq -3)$?
2. How do we verify that this is a valid probability distribution?
3. What is the expected value $E(X)$ of this distribution?
4. How would the probability change if another value was added to the dataset?
5. What is the variance of $X$ in this distribution?

Tip: Always check that the sum of all probabilities equals 1 to confirm a valid probability distribution!