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Inessa [10]
3 years ago
5

Suppose that you construct a histogram and a relative frequency histogram corresponding to a particular frequency table. Identif

y one way the histograms will differ.
Mathematics
2 answers:
Korolek [52]3 years ago
8 0
The histogram will give the actual number of items in each interval. This is called the frequency.

The relative frequency histogram will give the percent of items that are in the interval out of the total possible number.
salantis [7]3 years ago
5 0

Answer:

Step-by-step explanation:

Given that you construct a histogram and a relative frequency histogram corresponding to a particular frequency table.

Histogram is representing actual frequency for a class interval in numbers.

But relative histogram gives the ratio of actual frequency to the sum of frequencies.

Thus histogram gives actual while relative histogram gives ratio.

Histogram figures may be greater than 1, but relative histogram figures are always less than 1.

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Daily high temperatures in St. Louis for the last week were as​ follows: 95​, 92​, 93​, 92​, 95​, 90​, 90 ​(yesterday). ​a) The
hichkok12 [17]

Answer:

a) T = 91.7 degrees

b) T = 90 degrees

c) MAD = 1.9

d) MSE = 5.05

Step-by-step explanation:

Given:

- Daily high temperatures in St. Louis for the last week were as​ follows:

                                   95​, 92​, 93​, 92​, 95​, 90​, 90

Find:

a) Forecast the high temperature today, using a 3-day moving average.

b) Forecast the high temperature today, using a 2-day moving average.

c) Calculate the mean absolute deviation based on a 2-day moving average, covering all days in which you can have a forecast and an actual temperature.

d) The mean squared error for the​ 2-day moving average​

Solution:

a)

- The set of 3 day moving average is as follows:

4.   (95 + 92 + 93) ÷ 3 = 93.33⁰C

5.  (92 + 93 + 92) ÷ 3 = 92.33⁰C

6.  (93 + 92 + 95) ÷ 3 = 93.33⁰C

7.  (92 + 95 + 90) ÷ 3 = 92.33⁰C

8.  (95 + 90 + 90) ÷ 3 = 91.667⁰C

- Now use these points on excel sheet to forecast the temperature for today. The line of best fit is given:

T = 91.7 degrees

b)

- The set of 2 day moving average is as follows:

3.   (95 + 92) ÷ 2 = 93.5⁰C

4.  (95 + 93) ÷ 2 = 92.5⁰C

5.  (93 + 92) ÷ 2 = 92.5⁰C

6.  (92 + 95) ÷ 2 = 93.5⁰C

7.  (95 + 90) ÷ 2 = 92.5⁰C

8. (90 + 90) ÷ 2 = 90⁰C

- Now use these points on excel sheet to forecast the temperature for today. The line of best fit is given:

T = 90 degrees

c)

                             Error             Error^2

3.   93.5⁰C            0.5                  0.25

4.   92.5⁰C            0.5                  0.25

5.   92.5⁰C            2.5                  6.25

6.   93.5⁰C            3.5                  12.25

7.   92.5⁰C            2.5                  6.25

8.   90⁰C

- The mean absolute deviation as follows:

                              MAD = Sum of all errors  / 5

                              MAD = (0.5+0.5+2.5+3.5+2.5)  / 5

                              MAD = 1.9

d)

- The mean squared error deviation as follows:

                              MSE = Sum of all error^2  / 5

                              MSE = (0.25+0.25+6.25+12.25+6.25)  / 5

                              MSE = 5.05

4 0
3 years ago
In the figure, a ll b and m 6 = 146 degrees <br><br> What is the m 2?
levacccp [35]
Due to m<2 is a corresponding angle to m<6, the answer to the question is 146°.
5 0
3 years ago
1) What is the solution of the inequality?<br> 42-8 - 22-24
ki77a [65]

Answer:

38

Step-by-step explanation

7 0
3 years ago
A kite formed is formed by connecting the bases of two triangular frames. The height of the top frame is 12 inches. The height o
konstantin123 [22]

Answer:

3024

Step-by-step explanation:

math...

12 times 18 times 14

4 0
3 years ago
Read 2 more answers
The top of a ladder rest at a height of 15 feet against the side of a house. If the base of a ladder is 6 ft from the house what
MariettaO [177]

Answer:

16 feet

Step-by-step explanation:

We use Pythagorean Theorem to find the height.

leg of triangle=  height of ladder = 15 feet

The hypotenuse of the formed triangle  = length of ladder = L

base = 6 feet

What is length of ladder?

L^2 = 15^2 + 6^2 = 225 + 36 = 261

L = root(261)  = 16.155 feet

6 0
3 years ago
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