Variables
What is the hand sign for the independent variable and why do we do it?
What is: I change something, graphed on the X axis
What is the sign for the control group, and why do we do it?
What is X for nothing special/ Normal
Identify the variables from this sentence: The effect of the fertilizer on the growth of the grass.
What is Independent - Fertilizer, dependent - growth of the grass
In a recent study, 30 middle school students split in 2 groups were given a math exam after various amounts of sleep. One group slept 8 hours or more, and the second group slept fewer than 8 hours. The students had similar skills in math. They ate the same meals the previous day. The study results showed that students who slept 8 hours or more scored better on the exam, while students who slept less than 8 hours scored worse. What are the 2 variable groups?
What is Independent - The time spent sleeping
Dependent - Test results
What variable is on the y axis
What is Dependent
What is the hand sign for the dependent variable, and why do we do it?
What is the Y axis and collecting data
What is the sign for the Experimental group and why do we do it?
What is the group gets something special
Identify the variables from this sentence: If the bowling ball is heavier then it will knock down more pins.
What is Independent - weight of the ball, dependent - amount of pins knocked down
In a recent study, 30 middle school students split in 2 groups were given a math exam after various amounts of sleep. One group slept 8 hours or more, and the second group slept fewer than 8 hours. The students had similar skills in math. They ate the same meals the previous day. The study results showed that students who slept 8 hours or more scored better on the exam, while students who slept less than 8 hours scored worse. What are the 2 groups and sample size?
What is control group - The group that slept less
Experimental group - The group that got more sleep
Sample Size - 30 students
What variable is on the X axis
What is Independent
Which word/s does the independent and dependent variable come after in the Purpose?
What is The effect of - Independent, On - Dependent
What is the sample size?
What is the total amount of observations/ things being tested
Identify the groups: I gave a calcium pill to a group of people who broke their arm and I gave a placebo pill to another group of people who broke their arm, to see if calcium heals bones faster.
What is control group - placebo pill, experimental group - calcium pill
Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just mixture of mayonnaise and food coloring. What are the 2 variables?
What is Independent - The sauce
Dependent - The amount of body gas
What axis will the experimental group be on?
What is the x axis
Which word does the independent and dependent variable come after in the Hypothesis?
What is If - Independent, then - dependent
How many of each group can there or should there be in an experiment?
What is 1 or none control group and 1 or more experimental group.
Identify the groups and sample size: I recorded how many cars that drove passed my house every hour starting at 5am all the way through 9am to see when rush hour would be.
What is no control group, experimental group - 5, 6, 7, 8, 9
Sample size - 5 times
Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just mixture of mayonnaise and food coloring. What are the 2 groups and sample size?
What is control group - Fake sauce
Experimental group - New sauce
Sample size - 100 customers
What can you find in the title of a graph?
What is the Purpose, independent and dependent variables
How many Variables and constants should be in each experiment?
What is 1 independent, 1 dependent, and many constants.
Which of the control group, experimental group, or sample size is what gets the independent variable?
What is experimental group
Identify the sample size: I think that if I drink a 1/2 gallon of water before each meal: breakfast, lunch, and dinner for 3 days, I will gain weight each meal.
What is 9 weigh ins
A personal trainer thinks her clients get better workouts and are stronger if they listen to music while working out. Over the next week, she divides her 20 clients into two groups of 10. For the first group, she plays music and sees if they can lift a barbell weighing 50 lbs. For the second group, she repeats the test but does not play any music. Name both variables, both groups, and the sample size.
What is Independent - Music
Dependent - Amount of time lifting the barbell
Control - No music
Experimental Music
Sample size - 20 clients
Does a graph always need a control group?
What is No, some experiments do not require a control group and do not need anything to compare results to.