1. Write the heading!!! 7
text

2. How to do this on the calculator???
Write the heading!!!
Theory/Notes
How to do this on the calculator???
Write the theory!!!
Ex 11A (p ) Q1(a,c,e), 4(a, b),

3. We need to use the ‘class-centre’ in our calculations for ‘mean’
Write the heading!!!
Copy the Example, but add two columns to the right for ‘class-centre’ and fx like the one below
We need to use the ‘class-centre’ in our calculations for ‘mean’
Ex 11A (p359) 6a, 7a

4. Write the heading & the theory
Ex 11A (p359) 6a, 7a
Ex 11B p361
Q1,2 (ev 2nd part)

5. HW Sheet treat it like a Yr 11 exam paper
Today: to do…
Quick Quiz
Median (theory)
Class work on Median
HW Sheet treat it like a Yr 11 exam paper

6. Write the heading & theory!!!
Copy out the Examples

7. Write the heading & the Example 1.

8. Don’t copy out – just watch & learn
Write the heading
Don’t copy out – just watch & learn

9. Theory/Notes Write this down…
Ex 11C (p ) Q1-2 (a,c,e), 3(a), 4(a,b), 5(all), 6(a) Note: Q5,6 similar to Eg 5 (p365) Use this as your model

10. Further revision for HY Test (eg hw sheet)
Today: to do…
Quick Quiz
Info about HY Test date
Mark HW Sheet
Stem & Leaf Plots with Stats
Further revision for HY Test (eg hw sheet)

11. Write the heading & the Example below
Ex 11D (p367) Q1 (all parts)

12. Write the heading & theory!!!

14. (2) Then read over p372, “The Range”
(1) Do Ex 11E p369 Q1-5,7-9
(2) Then read over p372, “The Range”
(3) Write the heading & theory!!!
(4) Then do Ex 11F Q1-3

15. (1) Write the heading, theory & example.
To find the Interquartile Range,
1. Find the median (Q2). This splits the scores into a lower and upper set.
2. Find the median of the lower 50% (Q125%) and the median of the upper 50% (Q375%) of scores.
3. Calculate Q3 – Q1.
Note: If using a cumulative frequency graph (OGIVE), find Q1 and Q3 from the graph – see p )
Example 1 Eg.1 Find the interquartile range for the scores… 1,2,2,5,7,9,10,10,11,11,11,11
(2) Then do Ex 11G Q1. Then Read Eg 2(p374) and try Q2, Q4, Q6, Q8, See next slide for Q11(a,b), **Q13, Q14.
**Look at this example before you try Q13, 14.
(see p378 for answers)

16. OGIVE!

17. Ex 11H Q1

18. Ex 11H Q2,3,4, do q5 as a class.

19. Class Discussion Example Don’t copy this one
Write the heading & theory!!!
Class Discussion Example Don’t copy this one

20. Exercise 11I Q1(a,b,c),2(a,c),3(a,c), Q4(a,b)
Class Discussion Example Don’t copy this one either
Copy this one & complete
Eg. 1 By creating a 5-Point summary for the set of scores below draw a box-and-whisker plot? (Use a horizontal scale of 1 cm = 2 marks)
Exercise 11I
Q1(a,b,c),2(a,c),3(a,c), Q4(a,b)

21. From Friday’s lesson! Exercise 11I, Q4.
Starter (10 Min)
From Friday’s lesson! Exercise 11I, Q4.

22. HW – due Thur is Review 11 (p388-389)
Write the heading and copy the theory/example
Statistics is about analysing sets of data. The standard deviation describes how spread out a set of scores is.
The smaller the standard deviation, the less the spread of the scores.
Standard deviation has the symbol x or xn. (Access this on your calculator)
Definition - Standard Deviation is found by finding the distances of all the scores from the mean and then taking an average of these distances.
Eg. 1 Find the standard deviation of 5, 4, 2, 7, 6, 3, 4, 6, 8
Exercise 11J
Q1-3,
Extension Q4-5
HW – due Thur is Review 11 (p )