3. for survey of a group of housewives rattan sieve products.
Tools, satisfaction surveys as the scale estimate (Rating Scale), there may be a 5-level interpretation of the average and standard deviation list.
1. the average () indicate the level of respondents ' comments that the levels criteria ranks reviews.
Average value of 1.00 – 1.49 means minimal.
Average 1.50 – 2.49 means less
Average 2.50 – 3.49 means medium
Average 3.50 – 4.49 means so much
Average 5.00 4.50 – means the most.