Data matrix is the arrangement of data into rows and columns. It is also known as a "data set". Rows depict the answers and columns represent questions.
Data coding represents the codes for responses associated with questions stated in the questionnaire. Further, rows of data matrix represents the answer to questions which have data codes assigned. Thus, data coding explains the numbers of data matrix.
Nonresponse i s defined as a failure to answer specific questions on the questionnaire. It is reffered as a respondent error.
Different types of non response in a survey are as mentioned below:
Refusal: The client deliberately refuses to participate in the research or a survey.
Break - off: The respondent does not attempt the whole survey and stop giving answres in middle of a survey.
Item omission: The respondent does not give answers to specific questions asked in the survey, However, he finishes the survey.
Important aspects to remember while adding a variable in XL data analyst data set are as follows:
• If researcher should add new variable at the end of the sheet. Adding new variables in the center of data worksheet affects the alignment of entire worksheet.
• It is advised to use utilities- Cleanup while adding or computing a variable. This helps the researcher to reduce the chances of errors.