CSET Data Analysis & Reporting 5

Question 1

A district administrator notices that the mean SAT score increased from 1050 to 1080 after implementing a new curriculum. To determine if this change is statistically significant, the administrator should:

Accepted Answer

Conduct a hypothesis test with appropriate controls

Answer

Statistical significance must be determined through formal hypothesis testing, not by observing the direction of change alone.

Question 2

In data reporting, a misleading graph often occurs when the y-axis does not start at zero. This technique can make small differences appear:

Accepted Answer

More dramatic than they actually are

Answer

Truncating the y-axis magnifies visual differences, making small changes look much larger than they are in absolute terms.

Question 3

A teacher wants to identify students whose scores fall more than two standard deviations below the class mean. In a normal distribution, approximately what percentage of students would this include?

Accepted Answer

2.5%

Answer

In a normal distribution, about 2.5% of values fall more than two standard deviations below the mean (the lower tail only).

Question 4

Which type of validity evidence is gathered by examining whether a test's content adequately represents the domain being assessed?

Accepted Answer

Content validity

Answer

Content validity is established by evaluating whether the test items comprehensively and representatively sample the intended knowledge or skill domain.

Question 5

A researcher uses data from all students in a school rather than a sample. This approach is called:

Accepted Answer

A census

Answer

A census collects data from every member of the population rather than a subset, eliminating sampling error.

CSET Test Practice Test

CSET Test Practice Test

CSET Data Analysis & Reporting 5