The problem asks us to create a frequency table based on the given data. The data is a 3x3 grid representing the number of cars sold in different months. We need to count how many times each number (28, 29, 30, 31) appears in the grid and fill in the "Number of months" column in the frequency table accordingly.

Probability and StatisticsFrequency TableData AnalysisCounting
2025/3/8

1. Problem Description

The problem asks us to create a frequency table based on the given data. The data is a 3x3 grid representing the number of cars sold in different months. We need to count how many times each number (28, 29, 30, 31) appears in the grid and fill in the "Number of months" column in the frequency table accordingly.

2. Solution Steps

Step 1: Count the occurrences of each number in the grid.
- The number 28 appears 3 times.
- The number 29 appears 3 times.
- The number 30 appears 1 time.
- The number 31 appears 2 times.
Step 2: Fill in the frequency table with the counts.
- Number of cars sold: 28, Number of months: 3
- Number of cars sold: 29, Number of months: 3
- Number of cars sold: 30, Number of months: 1
- Number of cars sold: 31, Number of months: 2

3. Final Answer

28: 3
29: 3
30: 1
31: 2

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