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Troyanec [42]
3 years ago
15

I dont get this at all

Mathematics
2 answers:
enyata [817]3 years ago
7 0
Examples of continuous, quantitative variable:  your weight over time.  You could weigh 155 pounds today, 155.8 tomorrow, and so on.  So:  Your weight is a continuous variable, a quantitative variable because measurement is involved, and one of the proper units of measurement is pounds (English system).

Example of a qualitative variable:  make of car.  Your mom has a Ford and your dad a Mercedes-Benz.  Do we measure "make of car" with numbers?  No.  Does your cousin have a car which is half Ford-built and half Mercedes-built?  No, so "make of car" is discrete; it's this or it's that, but nothing in between makes sense.  Unit of measurement?  None.

Sex (male or female):  Despite today's discussions about transgender individuals, it's long been accepted that individuals are either male or female, a discrete designation.  Those are qualitative labels.  No unit of measurement here.

OK?

Move on to the next case.<span />
zhenek [66]3 years ago
6 0
Continuous vs discrete is if you can count vs. measure the results. For example: you can run 13. 5 miles but you can't have 13.5 dogs. Miles (measurable) are continuous while dogs (countable) are discrete. 

Qualitative results are when a result is not a number, and qualitative is when the result is a number. For example: if you're doing a lab and a result is either going to be "blue" or "green", that's qualitative, since those aren't number values. However, if you were measuring distance, that would be qualitative, since you would get a result of "6 meters" or "2.5 inches", which are numerical values. 

The scale of measurement are the units in which you are measuring something it. For example: distance has units of inches, feet, miles, etc... and weight has units of grams, kilograms, tons, etc...

Hope this helps! -Alex :)
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The table below shows the scores of a group of students on a 10-point quiz.Test ScoreFrequency3 54 15 16 27 28 49 310 1The mean
Katarina [22]

Explanation

Part A

We can use the formula below to find the mean.

\text{Mean}=\sum ^{}_{}(\frac{fx}{f})

We will then have;

\begin{gathered} \text{Mean = }\frac{5\times3+4\times1+5\times1+6\times2+7\times2+8\times4+9\times3+10\times1}{19}=\frac{15+4+5+12+14+32+27+10}{19} \\ =\frac{119}{19}=6.2632 \end{gathered}

Mean = 6.2632

Part B

Since the data set is odd.

\begin{gathered} \text{Median}=\frac{(n+1)}{2}^{th}\text{observation} \\ =\text{Value of }\frac{\text{(19+1)}}{2}^{th}\text{observation} \\ =\text{value of 10th observation} \end{gathered}

Answer: From the column of cumulative frequency cf, the median is 7

5 0
1 year ago
The measure of xy is 124 what is the measure of xyz the tangent chord angle
RUDIKE [14]

Answer:

62

Step-by-step explanation:

i checked it on apex.

3 0
3 years ago
Read 2 more answers
Total of 380 tickets were sold for the school play. they were either adult tickets or student tickets. there were 70 fewer stude
Bogdan [553]
Let the amount of adult tickets sold be x

Since the total of 380 tickets sold consists of the amount of adult tickets and the amount of children tickets that are 70 fewer:

x + (x - 70) = 380
2x - 70 =380
2x = 450
x = 225

Therefore, the amount of adult tickets sold is 225

8 0
3 years ago
Of the 320 students in 8th grade 3/8 have a pet how many students in 8th grade have a pet
yaroslaw [1]
320➗8= 40
40✖️3= 120
120/320
120 students have pets

Hope this helps! :3
5 0
3 years ago
A store has clearance items that have been marked down about 30%. They are having a sale, advertising an additional 55% off clea
iVinArrow [24]

Answer:

60% discount given in total, so only 40% is paid.

Step-by-step explanation:

5 0
3 years ago
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