To answer this, you need to know the total inches of all the plants. You must multiply the number of each type by its respective height:

Then, add these together:

Now, the total number of plants is:

The mean (or average) of this group is:

Round this to the nearest hundreth to get 67.14 inches.

This question is really just asking for the average dollar per page. This could be easily calculated:

However, you might also think of this as a rate problem:

Using the information from the question, we can see that  and .

This comes out to what we solved above:

To solve this, you should first calculate the size of the candles. Based on the description, the group would be:

The sum of this group is:

The average is then found by dividing this total by 5:

The easiest way to think of this problem is to make a list of the accounts (though not all 100, of course).

The largest account will be:

.

So, our list looks like this:

1000, 1100, 1200, . . ., 9700, 9800, 9900

Now we need to identify a pattern. We can pair the first and the last element:

Now, notice what happens when we pair the second and the second from the last element:

This pattern is going to work for the whole list! If there are 100 total accounts, that means that we can make 50 such pairs. That means that we have 50 pairs of $10900. The total account amount is therefore:

The mean will be equal to this total value divided by the number of accounts (100):

The mean is the average of a set of data. In order to calculate this value, we need to take the sum of all the numbers and divide that by the number of values we have:

This gives us:

which finally gives us a mean of:

The mean is the average. The mean can be found by taking the sum of all the numbers (150 + 88 + 141 + 110 + 79 = 568) and then dividing the sum by how many numbers there are (5).

Our answer is 113 3/5, which can be written as a decimal.

Therefore 113 3/5 is equivalent to 113.6, which is our answer.

The outcomes from rolling a die are {1,2,3,4,5,6}.

The mean is (1+2+3+4+5+6)/6 = 3.5.

Rolling the die six million times simply suggests that each number will appear approximately one million times. Since each number is rolled with equal probability, it doesn't matter how many times you perform the experiment; the answer will always remain the same.

Since we are given the mean, we need to find the sum of the numbers. From there we can figure out . We know

We can use this to find the sum by plugging in 

So our sum is 96.

So we know that our total sum minus the sum of the given numbers is equal to . 

So, .

To find the fifth score, we need to set the average of all of the scores equal to 90.

Multiply both sides of the equation by 5.

Subtract 352 from both sides of equation.

Let .

We know the mean is 8, and there are five values in the set, including the unknown .

Simplify.

Plug back into equation at top.