摘抄句子

“Our goal is to put readers in a good position to understand psychological data and their limitation” Ppsychologists have developed (from data) techniques that facilitate learning and comprehension. hypotheses:假设 regression:回归 correlation:相关 Chapter1: Why Statistics

There are many ways to learn about the world,such as critical thinking,asking an authority or even from a religious experience. However,cllecting data is surest way to learn how the world really is. randomly assigned:随机分组 Variability:变化性

psychotherapeutic:心理治疗 ethical reason:伦理原因 sample:抽样
random sample “a picture is worth a thousand words” Inferential statistical procedures are used to make educated guess…
Properties of numbers used as measurements.
precaution:注意事项
ranking measure coperation dosen’t have the same equal intervals property as ruler measuring desk length
four properties of measurements:category,ordinal,equal intervals,absolute zero.
types of measurements scales:
A nominal scale formed when the number assigined by the measurement rule have only the category.
An ordinal scale is formed when the measurement rule assigns numbers that have category and ordinal properties, but no other properties.
Interval scales are formed when the number assigned as measurements have the category,orinal,and equal intervals properties, but not an absolute zero.
A ratio scale is formed when the numbers assigned by the measurement rule have all four properties:category,ordinal,equal interval, and ansolute zero.