George wrote seven tests and each was marked out of 100. No two of his marks were the same. He recorded the seven marks to do a statistical analysis. He accidentally recorded his highest mark higher than it actually was. How many of the following are altered because of his mistake? 1. Mean 2. Median 3. Minimum test score 4. Range
Answers
Explanation: median isn't affected because it is the middle value of all the values. If the highest score is already at the end of the list, then it won't go up or down if the score is even higher. Minimum isnt affected because that is the lowest score, which has seemingly been entered correctly. Mean is affected because it is the average. If one score is higher than it should be, it will raise the average. Range isnaffected because it is the number in between the max and min (max-min). If the max is higher, then the range increases
Mean: Calculated by adding all the test scores together and then dividing by the total number of tests, so the error in the highest score does not affect the mean.
Median: Calculated by finding the middle value in a set of data, so the error in the highest score does not affect the median, as it will still be the fourth highest test score.
Minimum: The lowest test score remains the same, as it will not be affected by the error in the highest score.
Range: Calculated by subtracting the lowest test score from the highest score, so if the highest score is incorrect, the range will also be incorrect.
Therefore, only the maximum score and the range are altered by George's mistake, and the mean, median, and minimum score remain the same.
I hope this helps!
Related Questions
Five cups each holding 1/2 litre of juice were poured into a jug. Calculate the total quantity of juice in the jug
Answers
Answer:
the answer is 2 1/2
Step-by-step explanation:
if each cups hold 1/2 litre the 2 cups would give 1 litre since ther is 2 pair of cups in 5. if we group it together 2+2+1 or {(1/2+1/2)+(1/2+1/2)+1/2= (1/2+1/2)= 1 } 2 1/2
In the 2021 football season, the Riverside Red Dragon's manager gathered the points scored by the team during the regular season games. The following data set shows the values collected by the manager.
{17, 0, 28, 17, 17, 20, 28, 11, 17, 22, 24, 33, 20, 31, 20, 3}
Which of the following stem-and-leaf plots correctly graphs the data set?2021 Riverside Red Dragon Football Season Points
0 0 3
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
0 0 3
1 1 7
2 0 2 4 8
3 1 3
Key 1|1 = 11
Riverside Red Dragon Football Season Points
1 1 7
2 0 2 4 8
3 0 1 3
Key 1|1 = 11
2021 Riverside Red Dragon Football Season Points
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 0 1 3
Key 1|1 = 11
Answers
Answer:
first choice
Step-by-step explanation:
0 0 3
1 1 7 7 7 7
2 0 0 0 2 4 8 8
3 1 3
Show that (3+7)2−84=(3−7)2
Answers
Answer:
solution LHS ;
\( {(3 + 7)}^{2} - 84 \\ (10)^{2} - 84 \\ 100 - 84 \\ = 16\)
Solution RHS ;
\({(3 - 7)}^{2} \\ ( - 4)^{2} \\ = 16\)
I hope I helped you^_^
Answer:
Step-by-step explanation:
(3+7)²−84=(3−7)² =
10²-84=-4²
100-84=16
16=16
Determine whether the qualities in the table represent a proportional relationship. If yes, give the constant rate. If no, write none.
Answers
Answer: hdjxhk
Step-by-step explanation:
In mathematics. central tendency is the tendency of data values to cluster around some central value. What does a measure of variability tell you about the central tendency of a set of data. Explain.
Answers
Answer:
Measures of variability would describe how the central tendency is influenced by the data. Since the central tendency is the tendency of data values to cluster around some central value, then measures of variability would show how strong the central tendency is.
Hope this helps!
what value of x makes this equation true -(x+3)=2(x-3)
A. 0
B. 1
C. 2
D. 3
Answers
Answer:
To solve the equation -(x + 3) = 2(x - 3) for x, we can follow these steps:
Step 1: Distribute the negative sign on the left side of the equation:
-(x + 3) = 2(x - 3)
=> -x - 3 = 2(x - 3) (using the distributive property)
Step 2: Expand the right side of the equation:
-x - 3 = 2x - 6
Step 3: Add x to both sides of the equation to isolate the x term on one side:
-x + x - 3 = 2x + x - 6
=> -3 = 3x - 6
Step 4: Add 6 to both sides of the equation:
-3 + 6 = 3x - 6 + 6
=> 3 = 3x
Step 5: Divide both sides of the equation by 3 to solve for x:
3/3 = 3x/3
=> 1 = x
So, the correct value of x that makes the equation true is B. 1.
PLEASE MARK BRAILYISTT :D
Answer:
B, one
Step-by-step explanation:
In order to solve this, you can solve the equation. First, you can use the distributive property to get -x-3=2x-6. If you make the variables on one side and the constants on the other, you will get -3x-3=-6. This can further simplify to -3x=-6. Divide both sides by -3 to get that x=1. Then, the correct answer is B.
Alexi bought 5 T-shirts for $12 each and 3 pairs of socks for $2 a pair. Which expression shows how much Alexi spent in dollars. Explain
a) 5 × 12 x 3 × 32
b) 5 × 12 + 3 × 32
c) (5+3) × (12 + 2)
Answers
Answer:
b
Step-by-step explanation:
so hope it help,have a nice day!
Alexi bought 5 shirts. Given that each of them costs 12 dollars, we can say that the equation for their price is:
12 + 12 + 12 + 12 + 12 or just 5 x 12
Now, Alexi also bought socks. 3 pairs of them, in fact. Given that each pair was an astounding 2 dollars, we would get this equation:
2 + 2 + 2 or just 3 x 2
Of course, Alexi bought these things together, so they must pay for both things. The total price would be
5 x 12 + 3 x 2 or 66 dollars
If 30% of a number equals 8, find 90% of that number.
Answers
Answer:
8.88
Step-by-step explanation:
I believe it is 8.88 becuase this question is asking to find 90% pf that number.
What do you need to do?
you have to make a proportion.
8/x 90/ 100
You would now cross multiply. 90* x = 90x 8*100= 800
the equation you would need is 90x = 800. divide them and you get 8.88.
ROUNDED: you get 9.
I believe this is correct sorry if it was incorrect.
step by step explanation;
1.(‐5)(8) 2.(4)(‐4) 3.(‐1)(‐9) 4.(5)(6) 5.(12)(‐2) 6.(‐15)(9) 7.(5)(‐6) 8.6(‐6) 9.(‐27)(14) 10.(‐32)(0) 11.(128)(‐3) 12.(‐54)(‐4) 13.(+21) ÷ (+7)
Answers
Answer:
1, (-5)(8)=-40 2, (4)(-4)=-16. 3, (-1)(-9)=9. 4 , (5)(6)=30. 5, (12)(-2)=-24. 6, (‐15)(9) =-135. 7. (5)(‐6)= -30. 8. 6(‐6) = -36. 9. (‐27)(14) = - 378. 10.(‐32)(0) = 0. 11.(128)(‐3)= -384. 12.(‐54)(‐4) = 216. 13.(+21) ÷ (+7)= +3
Step-by-step explanation:
positive number multiplied by positive number gives positive number
negative number (-ve) times positive number (+ve) gives -ve
-ve times -ve gives +ve
+ve times -ve gives -ve
hope it helps
Pls help me to solve this
Answers
Answer:
see below
Step-by-step explanation:
19-3 will be greater
We are multiplying 1/2 *(19-3) which is multiplying by a number less than 1 it will be less than 1
18-3 = 16
1/2 * (19-3)
Using PEMDAS
We do parentheses first
1/2 ( 16)
Then multiply
8
Triangle DEF has the following characteristics: a right angle and two other angles that have measures of 100° and 10°.
How many different triangles can be drawn with these angle measures?
More than 2 triangles are possible.
No triangle is possible.
Exactly 2 triangles are possible.
Exactly 1 triangle is possible.
Answers
No triangle is possible. The sum of the interior angles of a triangle must be 180°. However, the sum of the given angles is 100° + 10° + 90° = 200°, which is greater than 180°. Therefore, no triangle can be drawn with these angle measures.
3 to the power of 2 x 43 =
Answers
Answer: 387
Step-by-step explanation:
the Answer to this question is 387
help fast??????????????????????????
Answers
Answer:
Its 20 because this is a 90 degree angle and 90-70=20
Step-by-step explanation:
Answer: hope this helps ♡
m∠ABC = 20°
Step-by-step explanation:
this is a right angle (90°) so to find m∠ABC:
m∠ABC + 70° = 90°
m∠ABC = 90° - 70°
m∠ABC = 20°
I'm going to ask this question again because no one really explained it to me 'clearly.' So if you could do that it would be much appreciated! I'll also give u a brainly <3
Question: What is the value of r.
Answers
r=1.17
I know this question is not about math or science but my friends are saying the Leonardo DiCaprio when he was young is hotter than Zac Efron now and when he was young. I need y’alls opinions.
Who is hotter, young Leonardo DiCaprio or 35 year old Zac Efron? My pick is Zac Efron but I want some opinions.
Answers
Answer:
it's Zac Efron for sure, Leonardo DiCaprio is just not the same...
Find the scale factor for the dilation shown.
Answers
Answer: the answer is 2
Step-by-step explanation:
G’F’D’E’ = 12 x 18
12/4 = 3
18/6 = 3
So the scale factor is 3 since G’F’D’E’ is three times the size of GFDE
What is the slope of the line that passes through the points (9, 4) and (3, 9)?
Answers
Gradient is y-step/x-step
y2-y1/x2-x1
9-4/3-9
slope of line=(-5/6)
hopefully u don’t care if it has an explanation or not :)
Find the area of each figure. Round to the nearest tenth if necessary.
Answers
Shape 1: TRIANGLE
Formula: A = 1/2 x bh
1/2 x (10)(5) = 25
AREA: 25 square yards
Shape 2: RECTANGLE
Formula: A = lw
(12)(10) = 120
AREA: 120 square yards
Sum (ADD)
25 yd^2 + 120 yd^2 = 145 yd^2
The area of the composite figure is 145 yd^2
the formula for triangles is a =1/2 x bh
5x10 = 50
50 x 1/2= 25
So the area for shape 1 is 25.
Shape two / rectangle :
the formula for quadrilaterals is a = bh
12 x 10 = 120
so the area of shape 2 is 120
will give brainliest pls answer
Twice Brittany’s age is less than the age of Abraham Lincoln when he died. President Lincoln was 56 years old at the time of his death. Write an inequality to represent Brittany’s age, b.
Answers
Step-by-Step Explanation:
The sale price of a pair of pants is 65% of the regular price of $25. How much do you save by buying the pants on sale? Show your work or explain how you arrived at your answer.
Please keep the explanation simple
Answers
Step-by-step explanation:
The sale price is 65% the regular price which is at $25.
Sale price = 65/100 * $25 = $16.25
Money saved = regular price - sale price
Money saved = $25 - $16.25
Money saved = $8.75
The answer is $6.75
The regular price of a pair of pants is $25
The sale price of a pair of pants is 65% from $25
How much we can save money if we buy the pants on sale?
first, we have to calculate how much the pants price at the time of sale
65/100 x $25 = $16.25
The sale price of a pair of pants is $16.25
the next step is to subtract the regular price and the sale price of a pair of pants
$25 - $18.25 = $8.75
In conclusion, we can save $8.75 if we buy the pants on sale
learn more about percentages here https://brainly.com/question/29200507
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Bruce’s hourly wage increased from $15.00 to $18.60. What percent of change does this represent?
Answers
Step-by-step explanation:
15.00_____100percent
18.60_____124 percent.
it increased witf 24 percent
Answer:
0.2% increase
First, you find the change between $15.50 and $18.60, which is 3.10. Then you do 3.10 divided by the original, which is 15.50. You should get 0.2.
Step-by-step explanation:
PLEASE HURRY I NEED THE ANSWER FAST!!!
Answers
Relative minimum: The coldest temperature outside the car was -4°C.
The negative interval is: between the 110th and 170th kilometers, the outside temperature was below zero.
The increasing interval was: over the first 50 km, the temperature outside the car got warmer.
How to Interpret the Quadratic Graph?The relative minimum or maximum of a graph is:
A relative maximum point is a point where the function changes direction from increasing to decreasing (making that point a "peak" in the graph).
A relative minimum point is a point where the function changes direction from decreasing to increasing (making that point a "bottom" in the graph).
Thus, the relative minimum of the graph is -4°C.
The negative interval is between the 110th and 170th kilometers, the outside temperature was below zero.
The increasing interval was over the first 50 km, the temperature outside the car got warmer.
Read more about Quadratic Graph at: https://brainly.com/question/14477557
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a 4 year loan with 6% simple interest? Find the total amount paid, interest paid, and the monthly payment.
Answers
To find the total amount paid, interest paid, and monthly payment for a 4-year loan with 6% simple interest, we need to know the principal amount of the loan. Let's assume the principal amount is $10,000.
Total amount paid = Principal + Interest
Interest = Principal x Rate x Time
Time = 4 years
Interest = $10,000 x 0.06 x 4 = $2,400
Total amount paid = $10,000 + $2,400 = $12,400
To find the monthly payment, we can divide the total amount paid by the number of months in 4 years (48 months).
Monthly payment = $12,400 / 48 = $258.33 (rounded to the nearest cent)
Therefore, the total amount paid is $12,400, the interest paid is $2,400, and the monthly payment is $258.33.
Ashley buys a hamster wheel during the sale(25% off)
. If Ashley pays $6, what was the original price?
Answers
Answer:
$8
Was the original price.
Step-by-step explanation:
100% - 25% = 75%
$6 ⇒ 75%
$A ⇒ 100%
A = $6* 100% / 75%
A = 8
Hello! Please help ASAP!!!
Turn this problem into a Pythagorean Theorem diagram
Aleena’s car is 7 miles north from Starbucks. Aryona’s car is located 4 miles west from Aleena. How far is Aryona from the Starbucks.
Answers
Pls, help! A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number less than 3. Find the probability of not rolling a number less than 3.
1/3; 2/3
1/2; 1/2
5/6; 1/2
1/6; 5/6
Brainlist for positive attitude and correct answer :D
Answers
Answer: The correct answer is:
Probability of rolling a number less than 3: 2/6 or 1/3
Step-by-step explanation:
Explanation: Out of the six possible outcomes (numbers 1, 2, 3, 4, 5, 6), there are two outcomes that meet the condition of rolling a number less than 3, which are 1 and 2. Therefore, the probability of rolling a number less than 3 is 2 out of 6, which simplifies to 1/3.
Probability of not rolling a number less than 3: 4/6 or 2/3.
Explanation: To find the probability of not rolling a number less than 3, we consider the outcomes that are not favorable (i.e., rolling a 3, 4, 5, or 6). There are four such outcomes, so the probability of not rolling a number less than 3 is 4 out of 6, which simplifies to 2/3. :D
What is the answer? Please tell me! I am in a hurry...
Answers
In a direct variation, y = 14 when x = 2. Write a direct variation equation that shows the relationship between x and y.
Answers
A tart contains either 3 white, or 4 red, or 5 black cherries. A tray of 20 tarts contains 89 cherries. How many red cherries are on the tray if it contains 3 tarts with white cherries?
Answers
- x be the number of tarts with white cherries
- y be the number of tarts with red cherries
- z be the number of tarts with black cherries
From the problem, we know that each tart can only have one type of cherry. So we can set up the following system of equations:
x + y + z = 20 (the total number of tarts is 20)
3x + 4y + 5z = 89 (the total number of cherries is 89)
We also know from the problem that each tart with white cherries contains 3 cherries. So the total number of white cherries is 3x. We are looking for the number of red cherries, which is 4y.
To solve for y, we can use substitution. We can rearrange the first equation to get:
z = 20 - x - y
Then we substitute this expression for z in the second equation:
3x + 4y + 5(20 - x - y) = 89
Simplifying this equation, we get:
2x - y = -3
Now we can solve for y by isolating it on one side of the equation:
y = 2x + 3
We know that each tart with white cherries contains 3 cherries, so the total number of white cherries is 3x. We also know that each tart with black cherries contains 5 cherries, so the total number of black cherries is 5z. So we can rewrite the equation for the total number of cherries as:
3x + 4y + 5(20 - x - y) = 89
Simplifying this equation, we get:
2x - y = -3
Now we can solve for y by isolating it on one side of the equation:
y = 2x + 3
We know that each tart with white cherries contains 3 cherries, so the total number of white cherries is 3x. We also know that each tart with black cherries contains 5 cherries, so the total number of black cherries is 5z. So we can rewrite the equation for the total number of cherries as:
3x + 4y + 5(20 - x - y) = 89
Simplifying this equation, we get:
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For each other, the web site applies a 7.7% sales tax to the price of the cards, plus a one-time mailing fee of $5.95. Based on the information in the table, what will be the total cost for an order for 280 cards?
Answers
Answer:
280 = $182
Step-by-step explanation:
I see that for every 20, 13 dollars are added
Find how many dollars per card
280/20= 14
14 x 13 =182