Show:
1 Var Stats
Pick a card, any card
Pick That Test
Probability
Lucky Guess
100

How do you calculate IQR?

Q3 - Q1

100
If you randomly pick a card from a deck of 52, what is the probability that you will pick a RED KING?
2/52 or 1/26
100

You would like to compare whether there is a difference between the proportion of people who wear a mask at one store versus another store.

2 prop Z Test

100
A bag contains 12 balls; 3 red, 5 blue, and 5 yellow. What is the probability of selecting a blue ball at random?
5/12
100

You are taking a multiple choice test, all with 4 possible answers. If you had no idea what the answer was, what is the probability of you guessing the correct answer?

1/4

200

Rearrange the following numbers to fine the median; 6,3,9,6,1,3,7,9,12

6

200

If you randomly select a card from a deck of 52, what is the probability of selecting a queen or a red card?

26/52 + 2/52

28/52

200

You think that skittles is overfilling their bags. You should run this type of test to determine whether this is true. Population standard deviation is unknown.

1 Sample T-Test

200
A spinner has 4 equal pieces to it, labeled 1, 2, 3, or 4. What are the odds that you will spin and land on an even number?
2/4 or 1/2
200

On a TRUE/FALSE exam, what is the probability that you will guess correctly on exactly 2 out of 5 questions?

.3125

300

How do you test for outliers? 

Q3 + 1.5 * IQR.    Q1 - 1.5 * IQR

300

If you randomly select a card from a deck of 52, what is the probability that you will select a face card?

12/52 or 3/13

300

You want to estimate the mean number of leaves on each tree on campus

T Interval

300

If every letter in the alphabet is placed into a bag, that are the odds that you will select a vowel on both your first and second guess? (not Y, without replacement)

5/26*4/25

.03

300

You are taking a multiple choice test, all with 4 possible answers. If you had no idea what the answer was, what is the probability of you guessing the correct answer on 3 consecutive questions.

1/64 or 0.016
400

When looking at measures for spread Mean goes with _______ just like Median goes with IQR. 

Standard Deviation
400

If you randomly select a card from a deck of 52, what is the probability of selecting either a spade or a heart?

26/52 or 1/2

400

You think a casino is using unfair dice. You observe 1000 dice rolls, and run this test to determine whether there is evidence of foul play.

Chi Square GOF

400

A cooler has 8 cans of soda; 3 cokes, 3 sprites, and 2 root beers. If you reach into the cooler, what are the odds that you will pick a diet soda?

0/8

400

You are taking a multiple choice test, all with 4 possible answers. If you knew that two of the answers were incorrect, what is the probability that you will guess the right answer?

1/2

500
To find the median, i need to arrange the numbers from _____ to _____ and find the ______ number.
Smallest, Greatest, Middle
500

If you randomly select a card from a deck of 52, what is the probability of selecting a red card or a spade?

39/52 or 3/4

500

You want to calculate how strongly one quantitative variable responds to a fixed change in another quantitative variable (challenge, this isn't in the "test" section of your calculator!) 

(Linear) Regression - You are calculating r 

500

If every letter in the alphabet is placed into a bag, that are the odds that you will select a letter found in the word "HAPPY"?

4/26 or 2/13

500

What is the probability of answering at least one multiple choice question correctly, if there are 4 choices per question, and 4 total questions on the exam. 

68%