SA11 Identify measures of spread/location

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From users who are members of Skills Audits for Maths and Stats :

Will Morgan	said	Ready to use	1 year ago
Lauren Desoysa	said	Needs to be tested	1 year ago

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Michael Pan 11 months, 2 weeks ago

Published this.

○

Michael Pan 11 months, 2 weeks ago

Published this.

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Lauren Desoysa 1 year ago

Created this as a copy of SA4 Interpret Bar Chart.

Name	Status	Author	Last Modified
Graphs: Random Single Transformation	Ready to use	Ben Brawn	16/11/2020 10:02
Graphs: Vertical shift transformation	Ready to use	Ben Brawn	16/11/2020 10:02
Graphs: Horizontal shift transformation	Ready to use	Ben Brawn	16/11/2020 10:02
Graphs: Vertical scale transformation	Ready to use	Ben Brawn	16/11/2020 10:02
Graphs: Horizontal scale transformation	Ready to use	Ben Brawn	16/11/2020 10:02
Graphs: Two random transformations	Ready to use	Ben Brawn	16/11/2020 10:02
Graphs: Three random transformations	Ready to use	Ben Brawn	16/11/2020 10:02
Graphing: Four random transformations	Ready to use	Ben Brawn	16/11/2020 10:02
Graphs: Horizontal shift transformation	draft	steve kilgallon	16/11/2020 10:02
Graphs: Vertical scale transformation	draft	steve kilgallon	16/11/2020 10:02
Graphs: Horizontal scale transformation	draft	steve kilgallon	16/11/2020 10:02
Graphs: Vertical shift transformation	draft	steve kilgallon	16/11/2020 10:02
Graphs: Two random transformations	draft	steve kilgallon	16/11/2020 10:02
James's copy of Graphs: Two random transformations	draft	James Denholm-Price	16/11/2020 10:02
Plot Graph	draft	Gareth Woods	16/11/2020 10:03
Plot Graph	draft	Gareth Woods	16/11/2020 10:03
Gareth's copy of Plot Graph	draft	Gareth Woods	16/11/2020 10:02
Lovkush's copy of Graphs: Two random transformations	draft	Lovkush Agarwal	16/11/2020 10:03
Widget Sales Question 1	draft	Gareth Woods	16/11/2020 10:03
Widget Sales Question 2	draft	Gareth Woods	16/11/2020 10:03
Widget Sales Question 3	draft	Gareth Woods	16/11/2020 10:03
Student Grades Question 1	draft	Gareth Woods	16/11/2020 10:03
Student Grades Question 2	draft	Gareth Woods	16/11/2020 10:03
Pie Charts	draft	Gareth Woods	16/11/2020 10:03
Bar Charts - Question 1	draft	Gareth Woods	16/11/2020 10:02
Harry's copy of Bar Charts	draft	Harry Flynn	16/11/2020 10:02
Multiple Pie Charts	draft	Gareth Woods	16/11/2020 10:03
Multiple Pie Charts Question 1	draft	Gareth Woods	16/11/2020 10:03
Horizontal Bar Charts Question 1	draft	Gareth Woods	16/11/2020 10:02
Horizontal Bar Charts Question 2	draft	Gareth Woods	16/11/2020 10:02
Horizontal Bar Charts Question 3	draft	Gareth Woods	16/11/2020 10:02
Horizontal Bar Charts Question 4	draft	Gareth Woods	16/11/2020 10:02
Bar Charts - Sports 1	draft	Gareth Woods	16/11/2020 10:02
Bar Charts - Sports 2	draft	Gareth Woods	16/11/2020 10:02
Bar Charts - Question 2	draft	Gareth Woods	16/11/2020 10:02
Bar Charts - Question 3	draft	Gareth Woods	16/11/2020 10:02
Bar Charts - Question 4	draft	Gareth Woods	16/11/2020 10:02
Student Grades Question 3	draft	Gareth Woods	16/11/2020 10:03
Multiple Pie Charts Question 2	draft	Gareth Woods	16/11/2020 10:02
Christian's copy of Multiple Pie Charts Question 1	draft	Christian Lawson-Perfect	16/11/2020 09:26
Christian's copy of Widget Sales Question 3	draft	Christian Lawson-Perfect	16/11/2020 09:26
Stacked Bar Charts - Theme Park Numbers - Question 1	draft	Gareth Woods	16/11/2020 10:03
Transformaciones de funciones	draft	Marlon Arcila	16/11/2020 10:03
Data 1	draft	Harry Flynn	16/11/2020 10:02
Data 3	draft	Harry Flynn	16/11/2020 10:02
Data 5	draft	Harry Flynn	16/11/2020 10:02
Anthony's copy of Graphs: Two random transformations	draft	Anthony Brown	16/11/2020 10:02
Draw a quadratic graph by dragging points a>1 b=0	draft	Anthony Brown	26/06/2021 11:10
Draw a quadratic graph by dragging points a=1 b=0	Ready to use	Anthony Brown	19/10/2021 12:53
Draw a quadratic graph by dragging points a=-1 b=0	draft	Anthony Brown	26/06/2021 11:10
Draw a quadratic graph by dragging points a<-1 b=0	draft	Anthony Brown	26/06/2021 11:10
Draw a quadratic graph by dragging points a<-1	draft	Anthony Brown	26/06/2021 11:11
Draw a quadratic graph by dragging points a=-1	draft	Anthony Brown	26/06/2021 11:11
Draw a quadratic graph by dragging points a=1	draft	Anthony Brown	26/06/2021 11:11
Draw a quadratic graph by dragging points a>1	draft	Anthony Brown	26/06/2021 11:11
I Graphs: Random Single Transformation	draft	Marlon Arcila	16/11/2020 10:02
1 Funciones, tranformacion vertical	draft	Marlon Arcila	16/11/2020 10:02
2 Funciones, tranformacion horizontal	draft	Marlon Arcila	16/11/2020 10:02
3 Funciones, compresion/alargamiento vertical	draft	Marlon Arcila	16/11/2020 10:02
D Graphs: Horizontal scale transformation	draft	Marlon Arcila	16/11/2020 10:02
E Graphs: Two random transformations	draft	Marlon Arcila	16/11/2020 10:02
F Graphs: Three random transformations	draft	Marlon Arcila	16/11/2020 10:02
Saw Tooth Fourier Series	draft	Gareth Woods	16/11/2020 10:03
Saw Tooth Fourier Series Attempt 2	draft	Gareth Woods	16/11/2020 10:03
Saw Tooth Fourier Series Attempt 2	draft	Gareth Woods	16/11/2020 10:03
Saw Tooth Fourier Series Attempt 3	draft	Gareth Woods	16/11/2020 10:03
Saw Tooth Fourier Question	draft	Gareth Woods	16/11/2020 10:03
Shifted Saw Tooth Fourier Series	draft	Gareth Woods	16/11/2020 10:03
Top Hat Function Fourier Series	draft	Gareth Woods	16/11/2020 10:03
Shifted Top Hat Function Fourier Series	draft	Gareth Woods	16/11/2020 10:03
Quadratic Function Fourier Series	draft	Gareth Woods	16/11/2020 10:03
Updated Quadratic Function Fourier Series	draft	Gareth Woods	16/11/2020 10:03
Further Graphs - Addition	draft	Paul Hancock	16/11/2020 10:02
Further Graphs - Subtraction	draft	Paul Hancock	16/11/2020 10:02
Further Graphs - Multiplication	draft	Paul Hancock	16/11/2020 10:02
Further Graphs - Multiplication	draft	Paul Hancock	16/11/2020 10:02
Graphs: Horizontal shift transformation	draft	Xiaodan Leng	16/11/2020 10:02
Graphs: Random Single Transformation	draft	Xiaodan Leng	16/11/2020 10:02
Graphs: Three random transformations	draft	Xiaodan Leng	16/11/2020 10:02
Graphs: Two random transformations	draft	Xiaodan Leng	16/11/2020 10:02
Anna's copy of Graphs: Two random transformations	draft	Anna Strzelecka	16/11/2020 10:02
Graphs: Stacked Bar Charts	Has some problems	Ruth Hand	16/01/2023 14:11
Graphs: Bar Charts	Has some problems	Ruth Hand	16/01/2023 14:11
SA4 Interpret Bar Chart	Ready to use	Lauren Desoysa	04/04/2024 10:59
SA11 Identify measures of spread/location	Ready to use	Lauren Desoysa	04/04/2024 11:21

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Variance
Mean
Median
Inter-quartile range
P-value
Standard deviation

Measure of Spread
Measure of location (average)
Neither measure of location nor measure of spread

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	Measure of Spread	Measure of location (average)	Neither measure of location nor measure of spread
Variance
Mean
Median
Inter-quartile range
P-value
Standard deviation

Advice

The mean is a measure of location or central tendancy. It is calcuated by summing all of the data values and dividing by the number of values.

The median is a measure of location or central tendancy. It is the middle value of an ordered data set.

The inter-quartile range is a measure of spread. The interquartile range is the difference between upper and lower quartiles.The lower quartile, or first quartile (Q1), is the value under which 25% of data points are found when they are arranged in increasing order. The upper quartile, or third quartile (Q3), is the value under which 75% of data points are found when arranged in increasing order. The inter-quartile range therefore gives us an idea of the middle 50% of the ordered data set.

The standard deviation is a measure of spread. It measures the dispersion of a data set relative to its mean.

The variance is a measure spread because it is the square of the standard deviation.

A p-value the probability that a particular statistical measure, such as the mean or standard deviation, of an assumed probability distribution will be greater than or equal to (or less than or equal to in some instances) observed results. A p-value is used to determine statistical significance, not measures of spread or location.

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Michael Pan 11 months, 2 weeks ago

Michael Pan 11 months, 2 weeks ago

Will Morgan 1 year ago

Lauren Desoysa 1 year ago

Lauren Desoysa 1 year ago

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