2ND TERM

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REVISION CONTD
Topic: Statistics
Sub-topic:- Assumed mean method of calculating mean of a distribution.
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.
2. Excellence in mathematics for Senior secondary Schools 3



Topic: Statistics
Sub-topic:- Assumed mean method of calculating mean of a distribution.
Behavioral objective:- At the end of the lesson, the should be able to; calculate the mean of grouped distribution using assumed mean method.


Content Element:-
The marks of 30 students in a mathematical test are as follows;
9 1 5 6 4 7 4 5 2 4
7 3 4 3 2 10 4 1 10 8
7 6 5 3 2 1 4 4 5 3
(a) construct a frequency table using class intervals of 1-2, 3-4 etc.
(b) from the frequency table calculate the mean of the distribution using the assumed mean method.

Evaluation:
The table below represent the heights of 50 SS II students in a certain secondary school
Heights (cm) 156-160 161-165 166-170 171-175 176-180
No of Std. 9 11 10 5 5
Calculate the mean height using the class mark of the third class as the assumed mean.

Assignment: The teacher gives assignment to the students. Nam, page 132, Ex. 14b, No 2b





Topic: Statistics
Sub-topic: Assumed mean
Behavioral Objective: At the end of the lesson, the students should be able to calculate mean of distribution by assumed mean method.

Content: The number of days workers in an establishment were found absent on duty in a certain month are given in the table below.
No of absent (x) 1-5 6-10 11-15 16-20 21-25
No of worker (f) 10 7 7 5 1
Calculate the mean by assumed mean method

Evaluation: Calculate the mean of the distribution below by assumed mean method.
Length (cm) 131-140 141-150 151-160 161-170 171-180
No of planks 11 2 14 9 2





Topic: Statistics
Sub-topic: Assumed mean
Behavioral Objective: At the end of lesson, the students should be able to calculate mean by assumed mean method.

Content: The table below shoes the distribution of market obtained by 100 students in a test.
Mark 10-19 20-29 30-39 40-49 50-59 60-69 70-79 80-89 90-99
F 1 3 7 20 30 22 10 5 2
Using 54.5 as an assumed mean, calculate the mean of the distribution.

Evaluation:
The weight in kilograms of 100 men are shown in the table below.
Weights (kg) 100-104 105-109 110-114 115-119 120-124 125-129
Freq. 2 10 38 35 14 1
Find the mean of the distribution by assumed mean method

Assignment:
The following table shows the frequency table o weights of some items in a warehouse.
Weights (kg) 40-41 42-43 44-45 46-47 48-19 50-51 52-53
Freq. 1 8 26 38 19 7 1
Calculate the mean of the distribution using assumed mean method.



Sub-topic:- Cumulative frequency curve (ogive)
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.
2. MAN mathematics for Senior secondary Schools 3



Topic: Statistics
Sub-topic:- Cumulative frequency graph (ogive)
Behavioral objective:- At the end of the lesson, the should be able to; draw cumulative frequency curve (ogive).

Content Element:-
The following are the ages of the people that were interrogated by the police over the following charge.
Class (yrs) 6-10 1-15 16-20 21-25 26-30 31-35
Frequency 1 5 7 9 6 2
Construct a cumulative frequency table, hence draw the cumulative frequency curve (ogive)

Evaluation: NGM. Page 37, Ex. 4c, No 6

Assignment: NGM, page 36, Ex. 4c, No 4




Topic: Statistics
Sub-topic: Median, Decile, Quartile and Percentile.
Behavioral Objective: At the end of the lesson, the students should be able to estimate median, decile, quartile and percentile from ogive.

Content: The table below shows the weight of 100 people in the community.
Weights (kg) 1-20 21-40 41-60 61-80 81-100 101-120 121-140
Frequency 7 12 10 10 12 26 23
Draw the cumulative frequency curve and estimate the median, quartile, decile, percentile from the ogive.

Evaluation: NGM, page 37, Ex. 4C,No 6

Assignment: NGM. Page 36, Ex. 4c, No 5





Topic: Statistics
Sub-topic: Interquartile and semi-interquartile range
Behavioral Objective: At the end of lesson, the students should be able to estimate should be able to estimate quartile, interquartile and semi-interquartile range from ogive

Content: The distribution of scores obtained by 20 students in a literature test is as follows
Scores 0-2 3-5 6-8 9-11 12-14 15-17
F 5 6 4 3 1 1
Draw the cumulative frequency curve and estimate the interquartile range of the distribution.

Evaluation: NGM, page 36, Ex, 4c, No 3

Conclusion: NGM. Page 36, Ex 4c, No 4


Topic: Statistics
Sub-topic:- The mean deviation
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.
2. MAN mathematics for Senior secondary Schools 3


Topic: Statistics
Sub-topic:- The mean deviation of discrete and ungrouped data.
Behavioral objective:- At the end of the lesson, the should be able to; calculate the mean deviation of discrete and ungrouped data.
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.
2. MAN mathematics for Senior secondary Schools 3


view content below
https://docs.google.com/leaf?id=0Bz3Mh6 ... l&hl=en_US

Evaluation: NGM. Page 69, Ex. 8b, No 4b & 5d

Assignment: NGM, page 69, Ex. 8b, No 4e & 5c




Topic: Statistics
Sub-topic: The mean deviation of grouped data.
Behavioral Objective: At the end of the lesson, the students should be able to calculate mean deviation of grouped data.
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.
2. MAN mathematics for Senior secondary Schools 3


view content below
https://docs.google.com/leaf?id=0Bz3Mh6 ... 3&hl=en_US

Evaluation: NGM, page 69, Ex. 8b, No 5e & f

Assignment: NGM. Page 69, Ex. 8b, No 5h




Topic: Statistics
Sub-topic: Mean deviation
Behavioral Objective: At the end of lesson, the students should be able to estimate should be able to calculate mean deviation of distribution.
Reference book:-
New General mathematics for West Africa SS3 by M.F. Macrae et al.


view content below
https://docs.google.com/leaf?id=0Bz3Mh6 ... h&hl=en_US

Assignment: NGM Page 69, Ex. 8b, No 5h


Topic: Statistics
Sub-topic:- Standard deviation and variance.
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.
2. MAN mathematics for Senior secondary Schools 3


Sub-topic:- standard deviation and variance of discrete and ungrouped data
Behavioral objective:- At the end of the lesson, the should be able to; calculate the standard deviation and variance of discrete and ungrouped data.
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.
2. MAN mathematics for Senior secondary Schools 3


view content below
https://docs.google.com/leaf?id=0Bz3Mh6 ... h&hl=en_US

Evaluation: NGM. Page 69, Ex. 8b, No 5c & d

Assignment: NGM, page 69, Ex. 8b, No 5e & g




Topic: Statistics
Sub-topic: standard deviation of grouped data
Behavioral Objective: At the end of the lesson, the students should be able to calculate standard deviation and variance of grouped data.
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.

view content below
https://docs.google.com/leaf?id=0Bz3Mh6 ... 3&hl=en_US

Evaluation: NGM, page 71, Ex. 8c, No 2b

Assignment: NGM. Page 71, Ex. 8c, No 2c




Topic: Statistics
Sub-topic: standard deviation and variance
Behavioral Objective: At the end of lesson, the students should be able to calculate standard deviation and variance of grouped data.
Reference books:-
1. New General mathematics for West Africa SS3 by M.F. Macrae et al.

view content below
https://docs.google.com/leaf?id=0Bz3Mh6 ... 5&hl=en_US

Evaluation: NGM, page 72, Ex, 8c, No2d

Assignment: NGM. Page 72, Ex. 8c, No2e.