Check your understanding: Exploring Example Data

Use the above Psychic App to check your understanding

Name (if more than one name, separate each name with a comma)

Instructor's Email

Enter the Player ID you used to play the game

1.1 Looking at the histogram shown using the settings shown above, how many people used the Group ID, “sample1”?
5 20 23 26
1.2 How many of the sample1 players got every guess wrong?
0 2 3 4
1.3 What proportion of the sample1 players got the correct card 4 or more times? If you are not sure, you can use the “as extreme as” slider on the left side of the app and then find the proportion displayed with the sample data.
0.000 0.043 0.053 0.106
1.4 Assuming that a person has no special abilities, how likely is it for a person to randomly select the right card in one attempt?
1 out of 2 = 50% 1 out of 3 = 33% 1 out 4 = 25% 1 out of 5 = 20%
1.5 Change the Group ID from “sample1” to “all”, which shows the results of thousands of players who had played the game under these conditions (we are assuming they all had no special abilities). Assuming that only chance is involved in picking the right card, how likely is it for a person to get 4 or more correct? Move the “at least as extreme as” slider in the App to find this.
We would expect no people to get 4 or more correct.
We would expect 3% of people to get 4 or more correct.
We would expect 12% of people to get 4 or more correct.
We would expect 23% people to get 4 or more correct.
1.6 Assuming a person has no special abilities and they have 10 attempts, how many times would they correctly guess?
We would expect each person to get exactly 0 correct; thus each person should get exactly 0 correct guesses in 10 attempts because they have no special abilities.
We would expect each person to get exactly 20% correct; thus each person should get exactly 2 correct guesses in 10 attempts.
Due to random chance, we would expect each person to get about 20% correct. However, there would be some random variation, meaning some would get a few less and others would get a few more correct just by random chance.
We would expect each person to get about 50% correct. However, there would be some random variation, meaning some would get a few less and others would get a few more correct just by random chance.