More stuff u need to know!!!!

Question 1

Name 4 circle theorems

Answer 1

1. Angle at the centre the circle are twice those at the circumference
2. Every angle at the circumference of a semi circle that is subtended by the diameter of the semicircle is a right angle
3. Angles at the circumference in the same tangent of a circle are equal (if the are subtended by the same chord)
4. The sum of opposite angles of a cyclic quadrilateral is 180

Question 2

What does ‘mean’ mean?

Answer 2

The mean is the average of the data, when you add up all the numbers and then divide by the number of numbers

Question 3

What does ‘median’ mean?

Answer 3

The median is the middle value. To find the median your numbers have to be listed in numerical order

Question 4

What does ‘mode’ mean?

Answer 4

The mode is the number that appears most often in the set

Question 5

What is the Inter Quartile Range? (IQR)

Answer 5

The difference between the upper quartile and the Lower quartile

Question 6

What Is the Upper quartile and dow do you find it?

Answer 6

The UQ divides the upper half of the data in to halves. Its the top 25% of the data. Equation - 3(n+1) divided by 4

Question 7

What is the lower quartile and how do you find it?

Answer 7

The LQ divides the lower half of the data. Bottom 25% of data. Equation - (n+1) divided by 4… th value

Question 8

What rules garantee congruency?

Answer 8

SSS - all three sides given
SAS - two sides and an angle
ASA - two angles with a side in-between 
AAS - in same order in both triangles
RHS - if we know hip + one side & its a right angle