1. The chart gives information about 61 people, who participated our questionnaire, valued the quality of their sleep. It can be seen that a lot of people feel satisfied with their sleep.

Good and Normal quality are the two highest percentage with 49.2% and 37.7% respectively. The percentage of Good quality is near a half of total while the percentage of Normal is over a one third of all.

However, very few people appreciated that their sleep quality is Very Good or admitted that their sleep really Not Good. Less than 5% of people who dare to acknowledge the fact that their sleep have no quality, only equal to one tenth of the ratio of people who have Good sleep . In a contrary, more than 8% of people are confident that they possess the extremely good quality of sleep.

In conclusion, althoungh still very young, most of participants have Normal and Good quality sleep instead of Very Good.

2. The bar chart demonstrates the matters that people often meet while sleeping. It is obvious that the gap in the percentage of problems are quite big.

The problem holding the most choice is “Being unable to sleep in the first 30 minutes” with 42.6%, double the “Having nightmare” problem and nearly a half of total people who participated. Besides, “Feeling extremely hot or cold” make up more than one fourth of total, with 29.5%. These are problems that many people encounter while their sleep.

Meanwhile, the remaining problems such as “Walking up at midnight or too early in the morning”, “Coughing or snoring”…has fewer choices. “Having breathing difficulty” and “Other” problems are the least choices in our questionnaire with 4.9% while the percentage of “Walking up at midnight or too early in the morning” and “Coughing or snoring” are 19.7% and 11.5% respectively.

Overall, the chart suggest that majority of people chose “Being unable to sleep in the first 30 minutes” while “Having breathing difficulty” and “Other” matter holds a very small amount.

3.The pie chart provides information by the percentage of sleeping late affects your work or study. Overall, Overwhelming majority people think regularly sleeping late affects by work or study.
Firstly, the proportion of sleeping late affects by work or study getting people agree very high with 83.6%.In contract, the percentage of sleeping late do not influences between work and study which is constituting lowest with 16.4%.Since late sleep make us feel tired which is not concentrate in work or study .Therfore, We shows that late sleep affects very much work or study of us.

4. The pie chart indicates the percentage of factors affects most your sleep by being stress or worry ,Overfeed or hungry, wrong sleeping posture, sleeping environment, abusing sleeping pills, using stimulants, disease ,going to sleep or waking up erratically and staying up late.Overall, Having two factors affects much sleep in all factor. It is staying up late and sleeping environment.
Firstly, Being stress or worry factor affects sleep which have not percentage . Beside that, Abusing sleeping pills factor ,Disease factor and going to sleep or waking up affects by sleep which is an insignificant proportion .In the contract, the percentage of staying up late and sleeping environment fator affects sleep which constitut over a quarters .Regarding the percentage of using stimulants , wrong sleeping posture and overfeed or hungry factors by influences by sleep which occupie over 9%. In short, Two factors influences most your sleep are staying up late and sleeping environment following a survey.