# Relationship between age and math skills

See attached file for format of tables.

Demographic information on incoming graduate students are in the table below. Faculty are wondering if there is a relationship between age and the math skills (high scores indicate higher skill levels) of these incoming students. What would you conclude?

Age Math Skills

23

25

30

29

28

25

26

26

38

40

45

38

42

30

27

29

34

40

38

30

20

40

38

47

26

24

27

37

24

42

59

40

a. What would you conclude about the relationship based on this data?

b. Create the appropriate graph to describe this relationship.

c. What Skill score would you predict for a person who is 35?

Dr. Volk is wondering if his Psyc 255 students' Math anxiety decreases over the course of the semester. He administers a standardized Anxiety measure to a random sample of all students enrolled in 255 at mid-term and again at the end of the semester. However, in looking at the scale, he realizes that the data does not reflect good interval level data. Does the data reflect a significant decrease in Math Anxiety? Analyze and graph.

Midterm End of term

56

79

68

58

58

61

71

53

64

68

61

47

50

74

66

60

50

40

52

48

65

60

52

38

An analysis of the combined SAT scores (Verbal + Math) of a sample of psychology majors at one school indicated that the mean was 939 and the standard deviation was 166. Show your calculations used the answer the following two questions.

a. A special psychology research program only accepts applicants who had an SAT score that placed them in the top 20% of the students. What is the minimum SAT score that would place them in the top 20%?

b. Special tutors are available to assist psychology students who had an SAT score in the bottom 10% of students. What SAT score cuts off the bottom 10% of this group of students?

© BrainMass Inc. brainmass.com June 4, 2020, 1:38 am ad1c9bdddfhttps://brainmass.com/statistics/descriptive-statistics/relationship-between-age-and-math-skills-411897