Unit 4: Averages
What is an average?
An average is the result of adding all the numbers in a data set and dividing by the number of values
What is likelihood?
The chance that something will happen
What is Ratio?
Ratio is when you compare 2 or more quantities.
What are time zones?
The term time zone can be used to describe several different things, but mostly it refers to the local time of a region or a country.
What does PMDAS stand for?
Parentheses ()
Multiplication + Division x + ➗
Addition Plus Subtraction + -
What is mode?
Mode means 'Most Frequent' And is the most frequent number in a data set.
What is the probability of 1 year being skipped (it goes from 2023 to 2025, skipping 2024)
IMPOSSIBLE
What is Proportion?
Proportion is the comparison of 1 quantity to the total quantities
Name 2 countries with multiple time zones.
The United States and Russia.
If multiplication and division are in the same problem, we have to do them _____________________
Left to right
Median is the MIDDLE number in a data set.
Arun has some fruits, as shown here:
🍎🍎🍎🍎🍎🍌🍌🍌🍓
What is the probability he will pick 🍓?
It is unlikely
Arun says something in class:
You can put the quantities in a ratio in any order, regardless of what order the question said it in.
Is this statement true or false?
This statement is False
If 120 minutes is 2 hours, and 12 hours are half a day, how many minitues are in 3 hours?
There are 180 minutes in 3 hours
(30+12)2 + 3
(30+12)2 + 3
(42)2 +3
84+3
87
Calculate the Mode and Average of this data set:
1 6 8 1 1 7 4
Mode: 1
Average: 4
Which one is most likely, A, B, or C
A: 2+2=3
B: You existing
C: You rolling 1 on a 20 sided dice
B is most likely
You have 4 paint cans, 3 are apple color, while 1 is banana color. What is the ratio of banana color to apple color?
1:3
What time zone are we in?
We are in Eastern European Summer Time.
Is this true or false:
(8*2)+ 50 = 8*(50+2)
False
Calculate the median of this data set:
2 5 4 5 3 9 7 5
Median: 5
What is the Probability that this question will be answered
Unlikely, as there are 24 more options
A farmer has 6 cows, 3 sheep, 9 chickens, and 83 horses. What is the proportion of sheep to the total?
Write as percentage.
3%. There are 100 animals, which means 3% of 100 is 3.
Which country has the MOST time Zones?
France, due to its territories around the world
What is E in PEMDAS?
E is exponents (2)