In statistics, a variable is a characteristic of interest that you measure, record, and analyze.Statisticiansunderstand them by defining the type of information they record and their role in an experiment or study. In this post, learn about the different kinds of variables in statistics and their...
In science, a variable is a detail or condition that can be controlled or perhaps altered in some way. In scientific investigations, studies are designed that contain three different types of variables: dependent, independent and control.
A. How interesting the science experiment is! B. What an interesting science experiment it is! C. How a interesting science experiment it is! D. What interesting the science E. xperiment is! 相关知识点: 试题来源: 解析 B。本题考查感叹句的用法。What 引导的感叹句结构为“What + a/an + ...
In a science experiment, if you are using a gas - powered device, what should you pay attention to? A. Make sure the gas is leaking a little for better performance B. Ignite the device immediately without checking C. Check for gas leaks before using D. Use it in a small and un...
What is an example of a dependent variable in science? What are the variables in a correlational hypothesis? What makes an experiment ethical? What is test validity? What is test retest reliability? What is antepartum testing? What are some examples of qualitative observations?
Anindependent variableis one that can be changed or manipulated in the experiment. On the other hand, adependent variableis the one observed in an experiment. As the term describes, it is dependent on the independent variable. When the independent variable is altered, so is the dependent variab...
Ina science experiment, only one variable is changed at a time (the independent variable) to test how this changes the dependent variable. The researcher may measure other factors that either remain constant or change during the course of the experiment but are not believed to affect its outcome...
In a science experiment, we need to write down the results. What should we use? A. pencil B. pen C. crayon D. marker 相关知识点: 试题来源: 解析 B。本题考查在科学实验中记录结果所用的工具。铅笔可能会被擦去,不太适合正式记录结果;蜡笔通常用于绘画,不适合记录科学实验结果;马克笔颜色较深且...
There is a science experiment in class. What will the students need? A. Pencils and erasers. B. Books and notebooks. C. Test tubes and chemicals. D. Crayons and colored pencils. 相关知识点: 试题来源: 解析 C。本题考查科学实验课所需物品。选项 A 铅笔和橡皮一般用于书写,不是实验课所需。
In general, if you are studying the effect of a certain factor or the outcome of an experiment, the effect or outcome is the dependent variable. If you measure the effect of temperature on flower color, temperature is the independent variable—the one you manipulate—while the color of the ...