The Hu family goes out for lunch, and the price of the meal is $52. The sales tax on the meal is 6%, and the family also leaves
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Answer:
Step-by-step explanation:
1. Find the minimun and maximun value of the data.
Minimun: 2
Maximun: 6
2. Calculate the range (R).
Range=
6 - 2=
4
3. Calculate the average.
Average= (Sum of all values) / N
Average= (2+3+3+3+4+4+4+4+5+5+5+6) / 12
Average= (48) / 12
Average= 4.
4. Calculate the M and round the value <u>down</u>.
6. Calculate A.
7. Craft your table.
<u>(Check attatched image 1).</u>
LL: Lower limit.
UL: Upper limit.
8. Calculate the limits and fill out the table.
LL / UL
2.00 2.00+A=3.33
3.33 3.3333 +A=4.66
4.66 5.99
5.99 7.32
7.32 8.65
Filled out table: <u>check attatched image 2.</u>
9. Check the data, count how many values fall into each interval and annotate on "frequency".
For example: There are 4 values between 2 and 3.33, these values are 2,3,3, and 3. Therefore, we write 4 on the frequency (absolute) cell for this row of the table. And we do the same for all the other classes.
<u>Check attatched image 3.</u>
10. Calculate the frequency (relative) for all classes.
For example: the first class (row 1 of the table) contains 4 values. Therefore, it's relative frequency would be:
33.33%
Note: We divide by 12 b<u>ecause N=12</u>.
Do the same for all the other rows and finish filling out the table.
<u>Check attatched image 4.</u>
<u>-------------------------------------------------------------------------------------------------------</u>
<u>Extra.</u> To make an histogram, take the interval and the absolute frequency and graph it in the fashion shown in attatched image 5.
Answer:
The square root of 4489 is:
- <u>67</u>
Step-by-step explanation:
To find the square root by división method you must do the next:
1. you write the square root:
2. You separe the number inside the square root in groups of two digits, begining by the right (in this case doesn't matter, because we have 4 digits, but remember this when the number has an odd number of digits):
√44 89
3. You must find a whole number which squaring gives us a number equal to or less than our first pair of digits (44), in this case is 6, because 6*6 = 36 and, if we take 7, 7*7 = 49 (we would pass):
√44 89 ║6
4. Now, we subtract the squaring of the number obtained to our first pair of digits:
√44 89 ║6
-36
= 8
5. We duplicate the root obtained (6) and we lower the next pair of digits next to the result of the previous subtraction, but this time we make pairs of digits from the left:
√44 89 ║6
-36 ║12
= 88 9
6. We divide 88 (our pair of digits) in 12 (the double of the obtained root):
88 ÷ 12 = 7.3333333 (we approximate to 7)
7. We put the number obtained in the division (7) to the right side of the double of the obtained root (12) and we multiply by this too:
√44 89 ║6
-36 ║127 * 7 = 889
= 88 9
8. we subtract the number obtained in the multiplication to the digits we order in pairs (889):
√44 89 ║6
-36 ║127 * 7 = 889
= 88 9
- 889
= 0
9. We raise the number that we multiply by twice the previous root found, as another digit of the root:
√44 89 ║<u>67</u>
-36 ║127 * 7 = 889
= 88 9
- 889
= 0
As you can see, <u>the square root of 4489 with this method gave us the result 67</u>.