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A certain ion X3+ contains 24 electrons and 32 neutrons. The chemical symbol and the mass number of this ion are:
Survey tests on leadership skills and self-concept were administered to student-leaders.
Both tests use a 10-point Likert Scale, with 10 indicating the highest scores for each test.
Scores for the student-leaders on the tests follow:
Student Code A B C D E F G H I J
Self-concept 9.5 9.2 6.3 4.1 5.4 8.3 7.8 6.8 5.6 7.1
Leadership Skill 9.2 8.8 7.3 3.4 6.0 7.8 8.8 7.0 6.5 8.3
a. Compute the correlation coefficient r.
b. Interpret the results in terms of (a) strength and (b) direction of correlation.
c. Find the regression line that will predict the leadership skill if the self-
concept score is known.
d. Predict the leadership skill of a student leader whose self-concept skill is
1.5.
a. r =
=
=
=
=
=
r =
b. There is a _____________________between the self-concept skill and leadership skill of the students.
x y xy x2 y2
9.5 9.2
9.2 8.8
6.3 7.3
4.1 3.4
5.4 6.0
8.3 7.8
7.8 8.8
6.8 7.0
5.6 6.5
7.1 8.3
"\\sum"= "\\sum"= "\\sum"= "\\sum"= "\\sum"=
c)
= a + bx a= ( "\\sum" y)("\\sum" x2) - ("\\sum" x)("\\sum" xy) / n("\\sum" x2) -"\\sum" x2
= = = a=
b= ("\\sum" xy) - ("\\sum" x) ("\\sum" y) / n("\\sum"x2 ) -("\\sum" x)2
d)= _____________
= ____________(1.5)_
= ____________
1.2 According to which theory is group-work encouraged? Why does this scientist see it as important?
media and social media for a false argument aimed at education in South Africa. using concepts related to critical rationalism AND empiricism, why it is a false argument and how we can go about getting to the truth of the matter
1. a) = 97.732 – 2.61x
= 97.732 – 2.61(0)
=
b) = 97.732 – 2.61x
= 97.732 – 2.61(10)
=
c) the graph
Hollow pattern using / and _ and | right angle triangle
1. Identify the Type I error in this context? What would be the possible consequence of committing the Type I error in this context? a. They do not conclude that the solar panel is effective when it is not actually effective. b. They do not conclude that the solar panel is effective when it is actually effective. c. They conclude that the solar panel is effective when it is actually effective. d. They conclude that the solar panel is effective when it is not actually effective
1.1 Piaget’s formal operational stage begins at around age 11 or 12 and continues throughout adulthood. Does this suggest that once one reaches this level of cognitive development that they plateau? Or, are there different levels of formal operations?
3) According to Gouws (2019:142-143) there are a variety of factors at play a role in adolescents’ suicide. After reading the case study of Lynette above, which of these factors could possibly relate to Lynette’s inclination to commit suicide. Provide reasons for your answers.
#333702 on Dec 2022