问题


There is a single choice question about elementary mathematics. Answer the question by replying A, B, C or D.
Question: Find the mean of the set of data 18, 9, 9, 10, 11, 14, 30, 19.
A. 9
B. 15
C. 30
D. 11
Answer:

答案

模型 模型答案 正确答案
金声玉亮2.0

B. 15
B
deepseekr1

To find the mean of the data set \(18, 9, 9, 10, 11, 14, 30, 19\):

1. **Sum all the numbers**:
\(18 + 9 + 9 + 10 + 11 + 14 + 30 + 19 = 120\).

2. **Divide by the number of data points (8)**:
\(\frac{120}{8} = 15\).

The mean is **15**, which corresponds to option **B**.

Answer: B
B
gpto1 B B
GPT-4o To find the mean of the set of data 18, 9, 9, 10, 11, 14, 30, 19, follow these steps:

1. Add all the numbers together:
18 + 9 + 9 + 10 + 11 + 14 + 30 + 19 = 120

2. Count the number of numbers in the set, which is 8.

3. Divide the sum by the number of numbers:
120 ÷ 8 = 15

So, the mean of the set of data is 15.

Answer: B
B
llama3.1-70B-Instruct

B
B
llama3.1-405B-Instruct

B. 15
B
DeepSeek-Coder-V2 B. 15 B
Qwen2-72B-Instruct B. 15 B
baichuan4 To find the mean, we add up all the numbers and then divide by the count of numbers.

So, (18 + 9 + 9 + 10 + 11 + 14 + 30 + 19) / 8 = 120 / 8 = 15.

Answer: B. 15
B
doubao B

Mean = (18 + 9 + 9 + 10 + 11 + 14 + 30 + 19) / 8
= (27 + 9 + 10 + 11 + 14 + 30 + 19) / 8
= (36 + 10 + 11 + 14 + 30 + 19) / 8
= (46 + 11 + 14 + 30 + 19) / 8
= (57 + 14 + 30 + 19) / 8
= (71 + 30 + 19) / 8
= (101 + 19) / 8
= 120 / 8
= 15.
B
minimax To find the mean of a set of data, you add up all the numbers and then divide by the number of items in the set.

Adding up the numbers in the set: 18 + 9 + 9 + 10 + 11 + 14 + 30 + 19 = 120

There are 8 numbers in the set.

Now divide the sum by the number of items: 120 / 8 = 15

So the mean of the set of data is 15.

Answer: B. 15
B
kimi To find the mean of a set of data, you add up all the numbers and then divide by the count of numbers.

The sum of the numbers is: 18 + 9 + 9 + 10 + 11 + 14 + 30 + 19 = 120

The count of numbers is 8.

The mean is: 120 / 8 = 15

Answer: B. 15
B
wenxinyiyan B B
zhipu To find the mean of the set of data, we need to add all the numbers together and then divide by the number of data points.

The data set is: 18, 9, 9, 10, 11, 14, 30, 19.

First, sum the numbers:
\[ 18 + 9 + 9 + 10 + 11 + 14 + 30 + 19 = 120 \]

There are 8 data points in total.

Now, divide the sum by the number of data points:
\[ \frac{120}{8} = 15 \]

So, the mean of the set of data is 15.

The correct answer is B.

Answer: B
B
gpto1 B B
deepseekv3 To find the mean of the set of data \(18, 9, 9, 10, 11, 14, 30, 19\), follow these steps:

1. **Add all the numbers together:**
\[
18 + 9 + 9 + 10 + 11 + 14 + 30 + 19 = 120
\]

2. **Divide the sum by the number of data points:**
There are 8 numbers in the set, so:
\[
\text{Mean} = \frac{120}{8} = 15
\]

3. **Select the correct answer:**
The mean is **15**, which corresponds to option **B**.

\boxed{B}
B