Mathematics Midterm

The origin of statistics can be traced to _______.

• State

• Economics

• Commerce

• Industry

"Statistics may be called the science of counting" is the definition given by ________.

• Croxton

• A.L Bowley

• Boddington

• Webster

A researcher is curious about the IQ of students at the Thailand University. The entire group student is an example of a _________.

• Parameter

• Statistics

• Population

• Sample

Statistical techniques that summarize and organize the data are classified as _________.

• Population statistics

• Sample statistics

• Descriptive statistics

• Inferential statistics

IQ tests are standardized so that the mean score is 100 for the entire group of people who take test. However, if you select a group of 50 who took the test, you probably would not get 100. What statistical concept explains the difference between the two means?

• Statistical error

• Inferential error

• Residual error

• Sampling error

A researcher is interested in the travel time of Songkhla University students to college. A group of 50 students is interviewed. Their mean travel time is 16.7 minutes. For this study the mean of 16.7 minutes is an example of a(n) __________.

• Parameter

• Statistic

• Population

• Sample

A sport psychologist was interested in the efforts of six week imagery intervention on an athlete's ability to execute sport-specific skills such penalty taking in football. How might you define the imagery variable?

• Independent Variable

• Dependent Variable

• Outcome Variable

• Resultant Variable

The seminar rooms in the library are identified by the letters A to H. A researcher records the number of classes held in each room during the first semester. What kind of graph would be appropriate to present the frequency distributions of these data?

• Histogram

• Scatterplot

• Box plot

• Bar Chart

Sampling is inevitable in the situations …

• Blood test of a person

• When the population is infinite

• Testing of life of dry battery cells

• All of the above

The difference between sample estimate and population parameter is termed as

• Human error

• Sampling error

• Non - sampling error

• None of the above