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Katarina [22]
3 years ago
14

Which type of graph would best display the data?

Mathematics
2 answers:
sattari [20]3 years ago
7 0
A bar graph would be the best way to summarize this information.

Bar graphs show comparisons between distinct categories and display changes over time. 
galben [10]3 years ago
4 0
Bar graph will display the the data the best.
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1) Sandra saves 12% of her salary for retirement. This year her salary was $3000 more than in the previous year, and she saved $
svp [43]
Given:
savings 12% of her salary.
savings $4,200
This year's salary: x + 3,000
Last year's salary: x

4,200 represents 12% of her salary.
4,200 / 12% =  35,000 is her salary this year.

x + 3,000 = 35,000
x = 35,000 - 3,000
x = 32,000  her salary last year.
3 0
3 years ago
Read 2 more answers
Consider a population proportion p = 0.68. Calculate the expected value and the standard error of with n = 20. Is it appropriate
zubka84 [21]

Answer: a) 0.68, 0.1043, b) 0.68, 0.066

Step-by-step explanation:

Since we have given that

p = 0.68

n= 20

Expected value = 0.68

So, Standard error would be

\sqrt{\dfrac{p(1-p)}{n}}\\\\=\sqrt{\dfrac{0.68\times 0.32}{20}}\\\\=0.1043

if n = 50

Expected value = 0.68

So, Standard error would be

\sqrt{\dfrac{p(1-p)}{n}}\\\\=\sqrt{\dfrac{0.68\times 0.32}{50}}\\\\=0.0659\approx 0.066

In both the cases,

Yes it is appropriate to use the normal distribution for expected value and standard error.

5 0
4 years ago
Solve the system using elimination.
expeople1 [14]

Answer:

(- 9, - 9)

Step-by-step explanation:

Given the 2 equations

3x - 4y = 9 → (1)

- 3x + 2y = 9 → (2)

Adding (1) and (2) will eliminate the term in x

(1) + (2) term by term

(3x - 3x) + (- 4y + 2y) = (9 + 9)

0 - 2y = 18

- 2y = 18 ( divide both sides by - 2 )

y = - 9

Substitute y = - 9 into (1) or (2) and evaluate for x

(1) → 3x + 36 = 9 ( subtract 36 from both sides )

3x = - 27 ( divide both sides by 3 )

x = - 9

Solution is (- 9, - 9)

3 0
4 years ago
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Len [333]
Shrafhhhds is the purpose of the expression of the social studies of the social and social studies
3 0
3 years ago
A middle school cafeteria wants to conduct a survey to find what food students would like to add to the cafeteria menu. Which su
Vikki [24]

Answer:

The survey option that will give cafeteria the valid result is Survey Questionnaire

Step-by-step explanation:

A survey questionnaire is the type of research methods in which the researchers get information from the respondents by giving him/her a set of questions to provide answers.

Example:

Which food will you like the school to add to the cafeteria menu

( ) Bread

( ) Fried Rice

( ) Chicken Rib

Which do you enjoy most at home?

( ) Toast Bread

( ) Beans porridge

( ) Spaghetti

Advantage of Survey questionnaire or why it will bring a valid result

1. From the example above, the options to the questions asked helps the respondents to give answer relevants to the question in the survey.

2. It is easier to analyze

3. The subjects or sample can easily be captured.

4. They are simple to administer

5. The format is familiar to the respondents

6. It allows for a pilot study questionnaire easily, where by the researcher can check if the respondents understand the terminologies in the survey or not.

5 0
3 years ago
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