Introduction to Statistics

A science of collection, presentation of data.

• Population

• Statistics

• Analysis of Data

• None of the above

Each and every element of a large group of data.

• Population

• Sample

• Variable

• Data

30% out of 200 Mr. Tran’s students earned A for the final grade average from the last semester.

Identify the sample {a partial part of the large group}

• 200 Forest Park students

• 30% of Forest Park students

• 200 Mr. Tran's students

• 30% of 200 Mr. Tran's students

A survey of 1000 patients at Emory hospital found that 40% cases are heart disease treatment.  Identify the population

• All Emory hospital patients

• 1000 Emory hospital patients

• 40% cases

• 40 hear disease cases.

50 desks in Heron’s classroom have been broken and need to be replaced with new ones.

Identify the sample

• 50 Heron's students

• Heron's students

• 50 desks

• All desks in Heron's classroom

The average annual salary for 35 of a company's 1200 accountants is $68,000.

• parameter
• statistic

In  a recent year, the average math scores for all graduates on the ACT was 21.1.

• parameter
• statistic

A recent survey found that out of 400 random American adults, 89% pay their bills on time. The margin of error in this survey was 2%. What is the interval of values in which the truth is likely found?

• 89% - 91%

• 87% - 89%

• 87% - 91%

• 388 - 402

The parameter is a number describing the:

• population

• sample

• survey

• percent

The statistic is a number describing the:

• population

• sample

• survey

• percent