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nlexa [21]
3 years ago
10

Đặc điểm chung quan niệm duy vật thời kỳ cổ đại là tìm nguồn gốc của thế giới những dạng vật chất cụ thể. Đúng hay sai và giải t

hích
Social Studies
1 answer:
Serhud [2]3 years ago
4 0

Answer:

hola no si

Explanation:

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3 years ago
Dr. Rodriguez was interested in how quickly students help someone who has fallen and who was perceived as having a health proble
Aleonysh [2.5K]

Answer:

Kindly check explanation

Explanation:

Given the data :

Person perceived as having health problem

No witnessing fall _____ secs it takesto respond

1 _______________25

3 ______________ 60

5 ______________ 180

Person perceived as not having health problem

No witnessing fall _____ secs it takesto respond

1 _______________90

3 ______________ 180

5 ______________ 360

A.)

The dependent variable, also the predicted variable is 'how quickly students respond to the person who fell'

The Independent variable refers to the predictor variable which influences the outcome of the dependent variable. The independent variables are ;

Number of students in the room ;

Perception of health problem in the person who fell.

2.)

The possible confounding variable may be the cane being held by one of the confederates, as this might cause a disruptive association between the dependent and independent variable.

3.)

From the result of the experiment, it could be observed that there is a positive trend between the number of witnesses(student in the room) and the time it took students to respond to someone who has fallen.

4.

Σfx / Σf

[(90*1) + (180*3) + (360*5)] ÷ (1+3+5)

2430 / 9

= 270

a.

Descriptive statistics uses statistical measures to describes the numerical or quantitative measures of a data. Descriptive statistics sucha as mean, median, mode and so on.

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b.

Based on Inferential statistics and hypothesis testing of the sample data, various hypothesis test statistics may be used to establish or conclude about a population characteristics from sample data.

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