Maths

Question 1

Mode

Answer 1

The most common

Question 2

Median

Answer 2

Middle value when a sequence is in size order

Question 3

Mean

Answer 3

Total sum of items / number of items

Question 4

Range

Answer 4

Difference between highest and lowest number

Question 5

How do you find a mean of a frequency table

Answer 5

Add a third column which would be the first column* the frequency
Then add up the total of the third column
Then do the total of the third column/ the total of the frequency.

Question 6

Quadratic formula

Answer 6

-b√b² -4ac/2a

Question 7

Cosine formula for angles

Answer 7

CosA = b² + c² - a² /2bc

Question 8

Cosine formula for a side

Answer 8

a² = b² + c² -2bcCosA

Question 9

Area of a triangle using sine rule

Answer 9

1/2abSinC

Question 10

What are probabilities always between

Answer 10

0 and 1

Question 11

Formula of probability

Answer 11

Number of ways for something to happen/ total number of possible outcomes

Question 12

How to find relative frequency

Answer 12

Frequency/ number of times you did the experiment