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GrogVix [38]
3 years ago
5

The following is a frequency data set for tests scores in a small class. Construct a cumulative frequency plot displaying the da

ta on your own paper,calculator or StatCrunch. Then describe the graph in a sentence or two.Be sure to communicate in your answer how to create the graph and to include what the cumulative frequencies are.
Test scores:
40-49:1
50-59:2
60-69:2
70-79:7
80-89:9
90-99:5
Mathematics
1 answer:
egoroff_w [7]3 years ago
8 0
 The value of cumulative frequency is the sum of all previous frequencies. We should have 26 at the end of the table because all frequency add up to 26
To graph the cumulative frequency, we would need the plots.
Use the end of value range against the cumulative frequency valueRange 40-49, use the value 49 against the cumulative frequency 1
(49, 1)(59, 3)(69, 5)(79, 12)(89, 21)(99, 26)
Plot these on graph and connect them as a curve.
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Alabama Instruments Company has set up a production line to manufacture a new calculator. The rate of production of these calcul
umka21 [38]

Answer:

The number of calculators is 4871

Step-by-step explanation:

If we integrate dx/dt we get x, which is the number of calculators. To find the number of calculators between the beginning of third week to the end of fourth week (the beginning of fifth week), this integration must be evaluated at t between 3 and 5.

x=\int\limits^5_3 {\frac{dx}{dt}} \, dt =\int\limits^5_3 {5000(1-\frac{100}{(t+10)^2})} \, dt

the result of the integration is:

x=5000(t+\frac{100}{t+10}) to be evaluated between 3 and 5, which is:

x=5000(5+\frac{100}{5+10})-5000(3+\frac{100}{3+10})=\frac{190000}{39}=4871.8

6 0
3 years ago
Write the word sentence as an equation then solve the difference between a number c and 17 is 3
Digiron [165]

Answer:

c-17=3

c=20

Step-by-step explanation:

what grade is this for?

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8 0
2 years ago
Please help me with this!!!!!
pav-90 [236]

Answer:

B

Step-by-step explanation:

The line on the left has a negative slope of - 1 and a y- intercept at 2

The line has a closed circle at x = 1, thus

- x + 2 for x ≤ 1

The line on the right has a positive slope of 1 and a projected y- intercept at 1

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6 0
3 years ago
Read 2 more answers
When a number set is in increasing order...
horsena [70]

Answer:

It goes from smallest to largest value

Step-by-step explanation: hope this helps :)

6 0
3 years ago
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The original value of the car is $18,000 it depreciates by 15% every year what is the value of the car after three years
Yuri [45]
The formula is
A=p (1-r)^t
A the value of the car after 3 years ?
P current value 18000
R rate of depreciation 0.15
T time 3 years
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A=11,054.25
4 0
3 years ago
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