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Which form of data collection involves asking people questions?
What is doing a survey?
A property developer gathers data from other amusement parks to get an idea of how many people may visit (p) and the number of rides (r) he may offer. The line of regression is y = 130.416x + 2,639.387. If he has 12 rides, how many people might attend?
What is 4,204?
Which correlation coefficient more closely matches the description ... R2 = 0.35 or r= 0.35?
A quadratic pattern that is fairly weak.
What is R2 = 0.35?
Evan is hosting a potluck dinner. The number of chairs (c) he will need depends on the number of people (p) who attend.
Which variable is the independent variable?
(2a + 4)(2a - 1)
What is 4a2 + 6a - 4?
What form of data collection involves using tools?
What is measuring?
The amusement park developer wants to know how much bottled water(w) he needs to have to sell in different seasons of the year. He looked at the sales of water of other amusement parks and the temperatures at those times. The line of regression was y=15.092x-387.496. How many water bottles would he need for a day that is 38 degrees Celsius?
What is 186?
A quadratic graph shows the relationship between the height (in meters) of a rocket that was launched and the number of seconds. It touches the y-axis at (0,8) and the x-axis at (62,0). Its vertex is (47, 100).
How many seconds did it take to touch the ground?
What is 62 seconds?
A group of students (g) are going on a trip to Guatemala and will stay with local host families (h). The more students who go, the more host families they will need. Which is the dependent variable?
What is h, the number of host families?
(3z - 3)(z - 4)
What is 3z2 - 15z + 12?
What form of data collection involves looking up data someone else gathered?
What is acquring data?
Is this random or non-random? Spencer polled the 17 customers who had been going to 5 Below the longest.
What is non-random?
A quadratic graph shows the relationship between the height (in meters) of a rocket that was launched and the number of seconds. It touches the y-axis at (0,8) and the x-axis at (62,0). Its vertex is (47, 100).
Which coordinate is the starting point of the rocket?
What is (0,8)?
Which correlation coefficient is likely to match the desciption below ... r=-0.3 or r=-0.9?
A negative linear regression with dots scattered in a weak pattern.
What is r=-0.3?
Evaluate the expression for r = -678.
|-533 - r|
What is 145?
What form of data collection involves watching something happen?
What is observing?
Random or non-random? Daniela asked 30 of her friends what they thought about a new movie. She is going to give the results in her podcast.
Non-random. She targeted a group of people to question.
A quadratic graph shows the relationship between the height (in meters) of a rocket that was launched and the number of seconds. It touches the y-axis at (0,8) and the x-axis at (62,0). Its vertex is (47, 100).
How many seconds did the rocket take to reach its highest point?
What is 47 seconds?
Which correlation coefficient would more closely match this description ... r = 0.1 or r = 0.8?
A strong positive linear regression.
What is r = 0.8?
Evaluate for m=-13 and n=5.
(mn + m - n + 18) divided by m
What is 5?
What form of data collection involves doing more than one method of data collection for 1 project?
Nathan surveyed every 4th person exiting the movie theater what they thought about the movie they just saw. He is going to post the results on his YouTube channel. Is this random or non-random?
What is random? He chose people only based on their position coming out of the theater. He wasn't targeting a specific group.
A quadratic graph shows the relationship between the height (in meters) of a rocket that was launched and the number of seconds. It touches the y-axis at (0,8) and the x-axis at (62,0). Its vertex is (47, 100).
Which coordinate is the maximum height of the rocket?
What is 100 meters?
Which correlation coefficient would more closely match the description ... r = -0.15 or r = -0.75?
A scattered pattern that is fairly difficult to identify if it is headed in a positive or negative direction.
What is r = -0.15?
Evaluate for h=13, j=8, k=-1.
20 divided by (jk2-h)
What is -4?