Applied Data Management Charts and Graphs

Summarize and Display Survey Data

You ask people to rate something on a scale, such as 1 to 5 for example, and you record that data. This might be a scale where 1 represents worst and 5 best, or something similar.

Crate Graph:

For making comparisons between questions (such as between different websites), use the following:

1. mean
2. standard deviation
3. total response count
4. confidence interval

We need to calculate the "Confidence Interval" while Excel has "Confidence Level" in the Data Analysis Tool.

Confidence Interval - Statisticians use a confidence interval to express the degree of uncertainty associated with a sample statistic. A confidence interval is an interval estimate combined with a probability statement.