The Iowa Tests of Basic Skills Is a Collection of Various

question 33

Essay

The Iowa Tests of Basic Skills is a collection of various achievement tests given to students in grades 1 - 8. Student achievement levels are reported on a scale that runs from 0 to 13. The North Snowshoe Community Schools are evaluating their reading program for students whose native language is not English. In one part of the study the reading comprehension of 10 students, randomly selected from a large population of students in the program, take the Reading Comprehension test in third and fourth grade. Their scores for each year, in grade equivalents, are listed below. "Normal" growth, by definition, is a change of 1.0. Using the data above, test the hypothesis that the difference in means for 3rd and 4th grade students in this program for non-native English speakers is equal to 1.0.

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Definitions:

Qualitative Data

Non-numeric information that describes qualities or characteristics, often collected through observations, interviews, or open-ended surveys.

Graphical Techniques

Methods used in statistics and data analysis to visually represent data, aiding in its interpretation and analysis.

Discrete Quantitative Variable

A variable that represents countable quantities.

Interval of Values

A range of numerical or quantitative values within which a measurement or quantity is said to lie, often used in statistics to describe confidence intervals or ranges of uncertainty.