Types of Statistical Studies

What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

For a class project, students in Health class ask every tenth student entering the school if they eat breakfast in the morning. What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

A social researcher wants to learn whether or not there's a link between attendance and grades. She gathers data from 15 school districts. What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

A researcher wants to learn whether or not there's a link between children's daily amount of physical activity and their overall energy level. During lunch at a local high school, she distributed a short questionnaire to the students in the cafeteria . What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

A park ranger measures the change in height of all trees of a similar species and age over a month. Half the trees are within a quarter of a mile from a large lake and half are further away. What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

A researcher feeds one group of rats high-fat and high-calorie foods like cheesecake, bacon, and pastries. She feeds a second group of rats a normal, nutritious diet. For two weeks, the researcher records how many calories each rat eats daily, as well as how often it goes to its feeding bowl. She compares the data from the one group to the data from the other and finds that the rats that eat the nutritious food get hungry less often and eat a smaller number of calories overall. What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

John is a 22-year old guy inflicted with stubborn acne. No matter what diet he follows, he’s prone to acne every now and then. John is fed up with his problem, when a friend advises him to turn to a certain herbal treatment for help. John’s friend is neither an expert on herbal medicines, and nor does she know anything about alternative therapy. Yet, John concludes that this particular herbal treatment is going to help him get rid of his problem. What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

Lisa wants to go on a vacation to Barbados, but does not know anything about the place. She wants to know what to see there, what to do, where to stay, etc. Lisa asks her colleague whose friend has been there before to recommend a few places in Barbados where she can stay comfortably. Lisa’s colleague confidently gives her a list of places to see, things to do, and where she can stay when in Barbados, and Lisa plans her entire trip based on her colleague’s advice. What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal

A woman looking for a good anti-aging cream comes across a brand that her friend has said is very effective. Her friend is not a beauty expert, but has read a good review about this brand on some website, and has based her claim on this non-concrete evidence. The woman too, bases her conclusion about the effectiveness of this cream and goes ahead and buys it for herself. What type of study is this?

• Observational

• Experimental

• Sample Survey

• Anecdotal