In the investigation of consumer life pattern research, the appropriate methods are: questionnaire survey method, in-depth interview method, observation method, focus group discussion method, data analysis method.

1, questionnaire survey method: this is a common quantitative research method, you can design a questionnaire to collect the consumer's basic information, consumption habits, lifestyle and other information. The advantage of the questionnaire survey method is that it can obtain a large amount of data, which is easy to be statistically analyzed. The disadvantage is that it may be affected by factors such as sample selection and questionnaire design, resulting in inaccurate findings.

2, in-depth interview method: this is a qualitative research method, through face-to-face conversation with consumers, in-depth understanding of their habits, consumer attitudes and other information. The advantage of the in-depth interview method is that it can obtain richer and deeper information, which helps to understand the real needs of consumers. The disadvantage is that it is time-consuming and may be subjectively influenced by the interviewer.

3, observation method: this method is to observe the behavior of consumers to understand their habits, consumption patterns and other information. The advantage of the observation method is that it can obtain intuitive and real data, which helps to discover the actual needs of consumers. The disadvantage is that it may be influenced by the observer's own factors, leading to inaccurate observation results.

4, focus group discussion method: this is a qualitative research method, through the organization of a group of consumers to discuss, understand their views, opinions and other information. The advantage of focus group discussion method is that it can get diversified viewpoints, which helps to fully understand the needs of consumers. The disadvantage is that it may be influenced by the members of the group, leading to incomplete results of the discussion.

5. Data analysis method: This method is to collect and analyze consumers' behavioral data in social media, e-commerce platforms and other channels to understand their consumption habits, preferences and other information. The advantage of the data analysis method is that a large amount of detailed data can be obtained, which helps to discover the potential needs of consumers. The disadvantage is that it may be affected by factors such as data quality and data interpretation, leading to inaccurate analysis results.

Life Pattern Survey Notes:

1. Sample Selection: In order to ensure the accuracy and representativeness of the survey results, it is necessary to select a representative sample. This can be achieved through random sampling or using big data techniques.

2. Questionnaire design: The questionnaire should be designed in a clear and concise manner, avoiding the use of vague or ambiguous terms. At the same time, the questionnaire should cover all aspects of the consumer's life pattern, including consumption habits, values, and lifestyles.

3. Methods of data analysis: statistical methods, data mining techniques, etc. can be used when analyzing the collected data. At the same time, the data need to be cleaned and processed to ensure the accuracy and reliability of the data.

4. Interpretation and application of the results: when interpreting the findings, it is necessary to analyze them comprehensively with the market situation and industry trends. At the same time, the findings need to be translated into specific marketing strategies and product design programs.

5. Privacy protection and compliance: When collecting and processing consumer data, it is necessary to comply with relevant privacy protection laws and regulations to ensure that consumers' personal information is not leaked or abused.