Continuous vs Discrete
Empirical Rule
Uniform Distribution
Z-score
Fun Questions
100
Is the following a continuous random variable or discrete random variable:
The number of electric scooters parked at SJHHS
Discrete
100
What is the Empirical Rule?
It's the 68-95-99.7 rules for a normal distribution
100
What makes a probability distribution a uniform distribution? (Hint: think about the probability)
All the outcomes/probabilities are equally likely to occur.
100
What is the definition of z-score?
The number of standard deviations a value is away from the mean.
100
What is the name of the meme of a pig calling?
John Pork
200
Is the following a continuous random variable or discrete random variable:
length of all types of songs on Spotify
continuous
200
The height of students in Kaleb's class is normally distributed with a mean of 43 inches with a standard deviation of 2.5. If X = the height of a randomly selected student in Kaleb's class. Use the 68-95-99.7 rule to find the P(40.5<x<45.5)
NO STAPPLET****
68%
200
How do we find the height of a uniform distribution?
1/ highest value - lowest value
200
What is the z-score formula?
(x - mean) / standard deviation
200
Ms.Gray drinks this almost every single day. What is the drink?
Ice Coffee or Energy Drink
300
What is the following 2 requirements for a valid probability distibution?
1. All probabilities between 0 and 1
2. All probabilities add up to 1
300
The height of students in Kaleb's class is normally distributed with a mean of 43 inches with a standard deviation of 2.5. If X = the height of a randomly selected student in Kaleb's class. Use the 68-95-99.7 rule to find the P(x>48)
NO STAPPLET****
2.50%
300
The uniform distribution for the number of full episodes that Giselle watched of the show "Dance Moms" is represented as X = the interval from 1 to 10 episodes that Giselle has watched.
Find the height of the distribution if the # of episodes she watched is between 1 episode to 10 episodes so that its a valid probability distribution.
1 / 9
300
Tyler eats 25 snacks in Stats class. If the mean score for the stats class was 35 with a standard deviation of 4.5, what is Tyler's z-score?
z = -2.22
300
Fill in the blank: I have the one and only 24 Karat Gold ________.
Labubu
400
Find the P(x>3), given that we have the following valid probability distribution with X = # of fruits eaten in 1 day.
0.02
400
The height of students in Kaleb's class is normally distributed with a mean of 43 inches with a standard deviation of 2.5. If X = the height of a randomly selected student in Kaleb's class. Use the 68-95-99.7 rule to find the P(x<35.5)
NO STAPPLET****
0.15%
400
The uniform distribution for the number of full episodes that Giselle watched of the show "Dance Moms" is represented as X = the interval from 1 to 10 episodes that Giselle has watched.
Find the probability of Giselle watching 2 to 4 episodes.
.22 or 22%
400
Maysen was envious that Tyler got to eat that many snacks. If the mean number of snacks eaten by the Stats class is 30 with a standard deviation of 4.5. If Maysen z-score was 1.30, how many snacks did he eat?
He ate 35.85 snacks
400
What is Ms.Gray's favorite music artist?
Acceptable
BTS
Taylor Swift
Pierce the Veil
The Marias
500
Find the probability that a student eats 2 or less fruits in a day, given that we have the following valid probability distribution with X = # of fruits eaten in 1 day.
0.35 + 0.34 + 0.18 = 0.87
500
The height of students in Kaleb's class is normally distributed with a mean of 43 inches with a standard deviation of 2.5. If X = the height of a randomly selected student in Kaleb's class. Suppose Kaleb is the 16th percentile of the class. What is Kaleb's height?
Use the 68-95-99.7 to find
NO STAPPLET****
38 inches
500
The uniform distribution for the number of full episodes that Giselle watched of the show "Dance Moms" is represented as X = the interval from 1 to 10 episodes that Giselle has watched.
Find the probability of Giselle watching 1 to 10 episodes.
1 or 100%
500
In a standard normal distribution, What is the mean and what is the standard deviation.
( YES THIS DOES HAVE TO DO WITH Z-SCORE)
mean = 0
standard deviation = 1
The z-score are all the numbers on the bottom on the bell curve.
500
Mrs.Barbarino has 2 kids. What is their names?
Kaleb and Maggie