So, we define a variable, is new and we set it to true.

所以，我们定义一个变量，是新的和我们将其设置为true。

And so we can see the student starts defining a variable, left X minus minus.

所以我们可以看到学生开始定义一个变量，左 X 减减。

So, back to our program, let's define two variables, has high income, we set this to true.

所以，回到我们的程序， 让我们定义两个变量，有高收入，我们把它设置为真。

Let me define a new random variable.

让我定义一个新的随机变量。

We defined our random variable, x, as the number of shots I make out of 6.

我们将随机变量 x 定义为我在 6 次中投中的次数。

Because now I'm going to define a new random variable.

因为现在我要定义一个新的随机变量。

And the same goes for defining variables into the shell.

在 shell 中定义变量也是如此。

Alright, let's start by defining a variable to store our secret number so, we call the secret underline number and set it to 9.

好吧，让我们首先定义一个变量来存储我们的秘密号码，我们调用秘密下划线号码并将其设置为 9。

And I'm going to define my random variable, X, I'll define it.

我要定义我的随机变量 X，我会定义它。

Let's define a random variable, X, like we always do.

让我们像往常一样定义一个随机变量 X。

Let's say I have the random variable a, and I define random variable a to be x minus y.

假设我有随机变量 a，我将随机变量 a 定义为 x 减去 y。

Now here's a little exercise for you. I'm going to delete all this code define a variable, called name, and set it to Jennifer.

现在这里有一个小练习给你。我将删除所有这些代码，定义一个名为 name 的变量，并将其设置为 Jennifer。

That is, you have to define the exact variable you’re going to measure, and exactly how you will measure it.

也就是说，您必须定义您要测量的确切变量，以及您将如何测量它。

So we could define a random variable x as equal to-- well, actually, let me-- It could just be a very obvious numeric mapping.

所以我们可以定义一个随机变量 x 等于——好吧，实际上，让我——它可能只是一个非常明显的数字映射。

You could also define a random variable, x is equal to-- you could say it's equal to 1 if heads, and I could say 0 if tails.

您还可以定义一个随机变量，x 等于——如果正面朝上， 您可以说它等于 1， 如果是反面， 我可以说它等于 0。

So for example, once you drop into a shell, say you want to define a variable, which is one of the first things you learn to do in a programming language.

举例来说，一旦您进入 shell，假设您想要定义一个变量，这是您在编程语言中学习的第一件事之一。

So let me show you how to write a program that simulates these rules. So, back to our program here, we start by defining a boolean variable is underline hot. We set this to true.

So let me show you how to write a program that simulates these rules.所以，所以，回到我们的程序， 我们首先定义一个布尔变量 is underline hot。 我们将其设置为 true。

And this random variable, just to go back to the top, we defined the random variable as the number of cars that pass in an hour at a certain point on a certain road.

而这个随机变量， 回到顶部，我们将随机变量定义为在特定道路上的特定点在一小时内通过的汽车数量。

The law of large numbers just says that if we take a sample of n observations of our random variable, and if we were to average all of those observations-- and let me define another variable.

大数定律只是说，如果我们从随机变量的 n 个观测值中抽取一个样本，并且如果我们要对所有这些观测值取平均值——让我定义另一个变量。