CSET Data Analysis & Reporting 4

Question 1

A researcher finds a strong positive correlation (r = 0.85) between shoe size and reading ability in elementary school children. The best interpretation is:

Accepted Answer

A third variable (age) likely explains both

Answer

Correlation does not imply causation; age is a confounding variable that influences both shoe size and reading ability.

Question 2

A teacher uses a rubric where different scorers give the same student essay very different scores. This assessment lacks:

Accepted Answer

Inter-rater reliability

Answer

Inter-rater reliability refers to the consistency of scores assigned by different evaluators; inconsistent scores indicate low inter-rater reliability.

Question 3

A box-and-whisker plot shows the minimum, Q1, median, Q3, and maximum. The box itself represents:

Accepted Answer

The middle 50% of the data

Answer

The box in a box plot spans from Q1 to Q3, enclosing the interquartile range, which contains the middle 50% of values.

Question 4

Which sampling method involves randomly selecting intact groups rather than individual participants?

Accepted Answer

Cluster sampling

Answer

Cluster sampling selects entire naturally occurring groups (like classrooms or schools) rather than choosing individuals one by one.

Question 5

A school district tracks the number of students qualifying for free or reduced lunch over five years. Which statistic would best show the year-to-year rate of change?

Accepted Answer

Percentage change from year to year

Answer

Percentage change compares each year's value to the previous year's, directly showing the rate of change over time.

CSET Test Practice Test

CSET Test Practice Test

CSET Data Analysis & Reporting 4