Approximation in data can approach the truth but may not always achieve it. Correlation and regression are powerful tools for identifying patterns. 74.4 PRIOR KNOWLEDGE Before starting this chapter, you should already be able to complete the following: 1 For the data 1, 2, 2, 5, 6, 6, 6, 10, find: a the mean C the mode 2 For the straight line with equation y = 1.5x+7, state a the gradient b the coordinates of the point where the line crosses the y axis. Starter Activity Look at the graphs in Figure 6.1 and discuss what message they are trying to convey. What techniques do they use to persuade you? Now look at this problem: 74.2 The annual salaries of people working in a small business (in thousands of £s) are: 10, 10, 10, 15, 15, 20, 20, 25, 30, 100. a Work out the mean, median and mode. b Which average would a union representative wish to use? C Which would the owner wish to use? d Which is the most meaningful? enilq Average Class Score ty Rate b the median d the range. 16 150 1996 Gilə R² = 0.97
Approximation in data can approach the truth but may not always achieve it. Correlation and regression are powerful tools for identifying patterns. 74.4 PRIOR KNOWLEDGE Before starting this chapter, you should already be able to complete the following: 1 For the data 1, 2, 2, 5, 6, 6, 6, 10, find: a the mean C the mode 2 For the straight line with equation y = 1.5x+7, state a the gradient b the coordinates of the point where the line crosses the y axis. Starter Activity Look at the graphs in Figure 6.1 and discuss what message they are trying to convey. What techniques do they use to persuade you? Now look at this problem: 74.2 The annual salaries of people working in a small business (in thousands of £s) are: 10, 10, 10, 15, 15, 20, 20, 25, 30, 100. a Work out the mean, median and mode. b Which average would a union representative wish to use? C Which would the owner wish to use? d Which is the most meaningful? enilq Average Class Score ty Rate b the median d the range. 16 150 1996 Gilə R² = 0.97
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
Related questions
Question
Solve the prior knproblem
Transcribed Image Text:XU
Average Score (out of 100%)
SC EC 12
Starter Activity
mo11 Jan
Look at the graphs in Figure 6.1 and discuss what message they are trying to convey. What techniques do they use to
persuade you?
Now look at this problem:
The annual salaries of people working in a small business (in thousands of £s) are:
10, 10, 10, 15, 15, 20, 20, 25, 30, 100.
a Work out the mean, median and mode.
b Which average would a union representative wish to use?
C Which would the owner wish to use?
d Which is the most meaningful?
74.4
74.2
74.0
73.8
73.6
73.4
73.2
Approximation in data can approach the truth but may not always achieve it.
Correlation and regression are powerful tools for identifying patterns.
PRIOR KNOWLEDGE
Before starting this chapter, you should already be able to complete the following:
1 For the data 1, 2, 2, 5, 6, 6, 6, 10, find:
a
the mean
C
the mode
2 For the straight line with equation y = 1.5x+7, state
a
the gradient
b
the coordinates of the point where the line crosses the y axis.
73.0
SAI
enilqmse ni zsid bre 293102-6jsb to vtilidsils
rationale
Average Class Score
Mr. Jones
Teacher
us wa
Ms. Smith
Total US Highway Fatality Rate
b the median
d the range.
alge
o sig
16
92 1996
15.8
15.6
15.4
15.2
15
2000
14.8
200 250 300 350 400 450 500 550
1997
Sources:
U.S. NHTSA, DOT HS 810 780
U.S. Department of Agriculture
1998
R² = 0.97
1999
Fresh Lemons Imported to USA from Mexico
(Metric Tons)
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