Test – Week 1
50 out of 50 points
- The income of lawyers during their first year after law school would be an example of what type of variable?
- In a normal distribution with a mean of 30, what percentage of the scores would be above the mean?
- Quantitative variables particularly measure
- Pam is studying speech development in 3-year-olds in daycare. She observes 30 children over two weeks and takes note of various aspects of the children’s speech. What is the population in this study?
- In statistics, a symmetrical, bell-shaped polygon is called a/an
- If I want to summarize the characteristics of my statistics class to my friend, I should use
- In a/an , the experimenter measures scores on two variables. In a/an , the experimenter manipulates or changes one variable and measures scores on the other.
- Suppose you are interested in how participants perform under different temperature conditions. You select 30 participants and assign them to work in one of three rooms. The rooms differ only with respect to temperature. You instruct all participants to solve the same jigsaw puzzle, and then you measure how long it takes each one to finish. This research is an example of
- Which of the following is not a use of statistics
- Pam wants to know if a new vocabulary intervention increases language development. She administers the intervention to 30 three-year-olds in daycare. She then compares the number of vocabulary words children who received the intervention can say to the number of vocabulary words children who did not receive the intervention can say. What is the independent variable in this study?
- Which of the following orders lists the scales of measurement from the scale providing the least specific information to the scale providing the most specific information?
- The temperature in Celsius is measured on a(n) scale of measurement
- A teacher surveys her students about their favorite sport and receives the following answers: soccer, football, tennis, swimming. Type of sport is measured on a(n) scale of measurement
- If a score’s relative frequency is 0.27, what is its percent?
- Susan scored at the 52nd percentile on the state math test. This means that she
- Pam is studying language development in 3-year-olds in daycare. She observes 30 children over two weeks and takes note of various aspects of the children’s language. What type of statistics should Pam use to see if what she learned in this sample can explain the language development of all 3-year-olds in daycare?
- Which of the following is a variable?
- A sample is
- A population is
- Mason is conducting a study on the effect of computer-based training on the math ability of seventh graders. He randomly assigns one group of students to use a computer-based training method and another group of students to use workbooks. In this study, math ability is the