Track quiz

Before the questions, here is each idea in one line.

What to keep from each idea
Idea	The line to keep
One switch	A bit can be pictured as one switch with two states. A state means something only if both ends agreed first.
More switches	Each new switch doubles the list of patterns. One copy gets a down in front. The other gets an up.
A code	A code is an agreed table of pattern and meaning. Both ends hold the same copy.
Rows and columns	A row is one record, all the facts about one thing. A column is one field, one kind of fact.
Sort and filter	Sorting puts whole rows in order. Filtering hides rows that fail a test. Neither changes a fact in the table.

A bit can be pictured as one switch with two states. What do we write for the two states?

A and B
0 and 1
1 and 2

You read one switch once. Can it carry three messages: now, later, not at all?

Yes, if the switch is a large one
No, because one switch has only two states
Yes, because the receiver can guess the third

Three switches sit in a row. How many patterns can they make?

6, because 3 + 3 = 6
8, because each switch doubles the list
3, because each switch has one pattern

You want to label 12 months with switches. How many switches are enough?

3, because 3 switches give 8 patterns
4, because 4 switches give 16 patterns
12, because each month needs its own switch

Eight switches kept together are called a byte. How many patterns can a byte make?

A code table gives six of eight patterns a letter. Someone sends one of the other two. What comes out?

The nearest letter in the table
Nothing, because that pattern has no line
A blank space

You send MANGO with one code table. The receiver reads it with a different table. What happens?

Different letters, or nothing, come out
Only nothing comes out, because the tables do not match
MANGO comes out, because the patterns carry the letters

A table has three columns: Fruit, Day and Crates. What is one row?

One kind of fact about the whole week
One delivery, with all three of its facts together
One fruit and every day it sold

A cell holds "Mango, Monday". What is wrong with it?

It mixes two fields in one cell
A cell cannot hold a word
Nothing, it is one record

A table is sorted by Crates sold, largest first. What happens to each Price?

It travels with its own row
It is sorted largest first as well
It stays where it was on the page

A table has 18 rows. You filter to Saturday and 3 rows show. How many rows does the table hold?

3, because filtering removed the rest
18, because filtering only hides rows
15, because the hidden rows are gone

Which two steps find the fruit that sold most on Saturday?

Filter to Saturday, then sort by crates, biggest first
Sort by fruit, then read every row
Filter to mango, then sort by day

You can now say how a saved word is written. Switches are set to a pattern. An agreed table gives the pattern its meaning. You can keep facts in rows and columns. Then you can sort and filter them to answer a question.

A table is rows of facts somebody wrote down. AI Literacy II: Training and Decision Trees takes that pile. It asks a program to find the pattern in it.

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