. A researcher observed a rat respond for a food reward by pressing one of the three levers in a cage. Pressing the lever to the right (R) produced no food reward. pressing the lever to the left (L) produced a single food pellet, and pressing the lever at the center (C) produced two food pellets. Because the center level produced the largest reward, the researcher hypothesized that the rat would press this lever most often. Each trial ended when the rat produced a level. The researcher recorded lever pressing for 30 trials. L, L, R, L, R, C, R, L, C, L, L, C, C, C, R, C, R, C, L, C, C, L, C, C, C, L, C, C, C, C, C - Create the appropiate graph for this data - Do these data support the hypothesis? Explain.
1. A researcher observed a rat respond for a food reward by pressing one of the three levers in a cage. Pressing the lever to the right (R) produced no food reward. pressing the lever to the left (L) produced a single food pellet, and pressing the lever at the center (C) produced two food pellets. Because the center level produced the largest reward, the researcher hypothesized that the rat would press this lever most often. Each trial ended when the rat produced a level. The researcher recorded lever pressing for 30 trials.
L, L, R, L, R, C, R, L, C, L,
L, C, C, C, R, C, R, C, L, C,
C, L, C, C, C, L, C, C, C, C, C
- Create the appropiate graph for this data
- Do these data support the hypothesis? Explain.
2. Which scales of measurement are assumed to be discrete? What does this mean? Which scales of measurement are assumed to be continuous? What does this mean?
3. What type of graph should you create to visualize the following frequency data? Explain.
- Counting the brands of cell phones owned by student
- The different body weights reported in a statewide survey
- The people falling into one of the eigth salary ranges
- The number of students who were absent from class each day for the month of October
- The number of students falling into A, B, C, D or F grade
- The time it takes a sample of college students to complete some memory task
- The direction of a person's eye movement (right, left, or center) when s/he is telling a lie
4. An experimenter studies vision in low light by having participants sit in a darkened room for 5, 15, or 25 minutes and then tests their ability to correctly identify 20 objects.
- What is te independent variable? Give the levels of the independent varibale
- What is the level of measurement of the independent variable?
- What is the dependent variable?
- What is the level of measurement of the dependent variable?
- Would you use the values from the independent variable or the dependent variable to create a frequency distribution?
5. A researcher demonstrates that eating breakfast in the morning causes increased alertness throughout the day. What research design must the researcher have used in this example? Explain.
“Since you have asked multiple questions, we will solve the first question for you. If you want any specific question to be solved, then please specify the question number or post only that question.”
(1) The observations are:
L, L, R, L, R, C, R, L, C, L, L, C, C, C, R, C, R, C, L, C, C, L, C, C, C, L, C, C, C, C, C
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