Exam 12: Analysis of Variance: Two-Factor Completely Randomized Design

The element mercury causes massive brain dysfunction, including hallucinations and delusions. A "silver filling" from your dentist is actually 50% to 66% mercury and only 35% silver. The American Dentistry Association (ADA) says that "silver amalgams" are safe. A psychologist wishes to determine whether mercury fillings affect a child's brain functioning. The Coolidge Personality and Neuropsychological Inventory Neuropsychological Dysfunction (ND) scale has 20 questions, such as "My child has learning problems," "My child is hyperactive," and so on. The overall score on the ND scale ranges from 0 (no evidence of brain dysfunction) to 20 (severe brain dysfunction). The survey is given to parents as they visit a dentist with their child. The number of "silver" fillings is noted, as is the child's gender. For analysis purposes, the children are divided up into whether they have no fillings, one to three fillings, or more than five fillings, and their ND score is noted. No Fillings One to Three Fillings Five or More Fillings Male Female Male Female Male Female 7 4 11 6 17 13 4 6 12 9 20 15 6 7 10 9 15 11 7 8 9 9 17 12 5 4 13 8 14 12 5 7 14 5 18 14 -The F value for the interaction is

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The error term sums of squares are

The element mercury causes massive brain dysfunction, including hallucinations and delusions. A "silver filling" from your dentist is actually 50% to 66% mercury and only 35% silver. The American Dentistry Association (ADA) says that "silver amalgams" are safe. A psychologist wishes to determine whether mercury fillings affect a child's brain functioning. The Coolidge Personality and Neuropsychological Inventory Neuropsychological Dysfunction (ND) scale has 20 questions, such as "My child has learning problems," "My child is hyperactive," and so on. The overall score on the ND scale ranges from 0 (no evidence of brain dysfunction) to 20 (severe brain dysfunction). The survey is given to parents as they visit a dentist with their child. The number of "silver" fillings is noted, as is the child's gender. For analysis purposes, the children are divided up into whether they have no fillings, one to three fillings, or more than five fillings, and their ND score is noted. No Fillings One to Three Fillings Five or More Fillings Male Female Male Female Male Female 7 4 11 6 17 13 4 6 12 9 20 15 6 7 10 9 15 11 7 8 9 9 17 12 5 4 13 8 14 12 5 7 14 5 18 14 -The degrees of freedom for gender are

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The F value for the interaction is

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The degrees of freedom for gender are

The element mercury causes massive brain dysfunction, including hallucinations and delusions. A "silver filling" from your dentist is actually 50% to 66% mercury and only 35% silver. The American Dentistry Association (ADA) says that "silver amalgams" are safe. A psychologist wishes to determine whether mercury fillings affect a child's brain functioning. The Coolidge Personality and Neuropsychological Inventory Neuropsychological Dysfunction (ND) scale has 20 questions, such as "My child has learning problems," "My child is hyperactive," and so on. The overall score on the ND scale ranges from 0 (no evidence of brain dysfunction) to 20 (severe brain dysfunction). The survey is given to parents as they visit a dentist with their child. The number of "silver" fillings is noted, as is the child's gender. For analysis purposes, the children are divided up into whether they have no fillings, one to three fillings, or more than five fillings, and their ND score is noted. No Fillings One to Three Fillings Five or More Fillings Male Female Male Female Male Female 7 4 11 6 17 13 4 6 12 9 20 15 6 7 10 9 15 11 7 8 9 9 17 12 5 4 13 8 14 12 5 7 14 5 18 14 -The degrees of freedom for fillings are

In a 2 × 3 × 4 ANOVA, the interaction will compare how many means?

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The F value for drug levels is

The phrase "completely randomized" indicates that

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The degrees of freedom for the interaction are

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The sums of squares for drug levels are

In a 2 × 2 × 3 ANOVA, there are

The element mercury causes massive brain dysfunction, including hallucinations and delusions. A "silver filling" from your dentist is actually 50% to 66% mercury and only 35% silver. The American Dentistry Association (ADA) says that "silver amalgams" are safe. A psychologist wishes to determine whether mercury fillings affect a child's brain functioning. The Coolidge Personality and Neuropsychological Inventory Neuropsychological Dysfunction (ND) scale has 20 questions, such as "My child has learning problems," "My child is hyperactive," and so on. The overall score on the ND scale ranges from 0 (no evidence of brain dysfunction) to 20 (severe brain dysfunction). The survey is given to parents as they visit a dentist with their child. The number of "silver" fillings is noted, as is the child's gender. For analysis purposes, the children are divided up into whether they have no fillings, one to three fillings, or more than five fillings, and their ND score is noted. No Fillings One to Three Fillings Five or More Fillings Male Female Male Female Male Female 7 4 11 6 17 13 4 6 12 9 20 15 6 7 10 9 15 11 7 8 9 9 17 12 5 4 13 8 14 12 5 7 14 5 18 14 -The F value for fillings is

The element mercury causes massive brain dysfunction, including hallucinations and delusions. A "silver filling" from your dentist is actually 50% to 66% mercury and only 35% silver. The American Dentistry Association (ADA) says that "silver amalgams" are safe. A psychologist wishes to determine whether mercury fillings affect a child's brain functioning. The Coolidge Personality and Neuropsychological Inventory Neuropsychological Dysfunction (ND) scale has 20 questions, such as "My child has learning problems," "My child is hyperactive," and so on. The overall score on the ND scale ranges from 0 (no evidence of brain dysfunction) to 20 (severe brain dysfunction). The survey is given to parents as they visit a dentist with their child. The number of "silver" fillings is noted, as is the child's gender. For analysis purposes, the children are divided up into whether they have no fillings, one to three fillings, or more than five fillings, and their ND score is noted. No Fillings One to Three Fillings Five or More Fillings Male Female Male Female Male Female 7 4 11 6 17 13 4 6 12 9 20 15 6 7 10 9 15 11 7 8 9 9 17 12 5 4 13 8 14 12 5 7 14 5 18 14 -The error term sums of squares are

In the _______________ effects ANOVA design, the experimenter is interested in generalizing to other levels of the independent variable, and the levels of the independent variable are randomly chosen.

The element mercury causes massive brain dysfunction, including hallucinations and delusions. A "silver filling" from your dentist is actually 50% to 66% mercury and only 35% silver. The American Dentistry Association (ADA) says that "silver amalgams" are safe. A psychologist wishes to determine whether mercury fillings affect a child's brain functioning. The Coolidge Personality and Neuropsychological Inventory Neuropsychological Dysfunction (ND) scale has 20 questions, such as "My child has learning problems," "My child is hyperactive," and so on. The overall score on the ND scale ranges from 0 (no evidence of brain dysfunction) to 20 (severe brain dysfunction). The survey is given to parents as they visit a dentist with their child. The number of "silver" fillings is noted, as is the child's gender. For analysis purposes, the children are divided up into whether they have no fillings, one to three fillings, or more than five fillings, and their ND score is noted. No Fillings One to Three Fillings Five or More Fillings Male Female Male Female Male Female 7 4 11 6 17 13 4 6 12 9 20 15 6 7 10 9 15 11 7 8 9 9 17 12 5 4 13 8 14 12 5 7 14 5 18 14 -The sums of squares for the interaction are

The element mercury causes massive brain dysfunction, including hallucinations and delusions. A "silver filling" from your dentist is actually 50% to 66% mercury and only 35% silver. The American Dentistry Association (ADA) says that "silver amalgams" are safe. A psychologist wishes to determine whether mercury fillings affect a child's brain functioning. The Coolidge Personality and Neuropsychological Inventory Neuropsychological Dysfunction (ND) scale has 20 questions, such as "My child has learning problems," "My child is hyperactive," and so on. The overall score on the ND scale ranges from 0 (no evidence of brain dysfunction) to 20 (severe brain dysfunction). The survey is given to parents as they visit a dentist with their child. The number of "silver" fillings is noted, as is the child's gender. For analysis purposes, the children are divided up into whether they have no fillings, one to three fillings, or more than five fillings, and their ND score is noted. No Fillings One to Three Fillings Five or More Fillings Male Female Male Female Male Female 7 4 11 6 17 13 4 6 12 9 20 15 6 7 10 9 15 11 7 8 9 9 17 12 5 4 13 8 14 12 5 7 14 5 18 14 -The degrees of freedom for the interaction are

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The degrees of freedom for drug levels are

The simplest factorial ANOVA is the

A psychologist wishes to determine whether short-term memory scores are affected by the type of medication in hyperactive children. Sixty hyperactive children (30 boys and 30 girls) were randomly assigned to receive either Cylert or Ritalin (two kinds of amphetamines that are central nervous system stimulants). Their short-term memory was tested on a 20-point scale (where 0 = no memory and 20 = perfect memory). Boys Girls Cylert Placebo Ritalin Cylert Placebo Ritalin 12 5 3 5 4 12 10 6 2 6 6 9 13 7 5 2 7 14 10 6 6 4 6 13 9 4 1 3 5 9 12 5 4 2 4 12 13 6 2 4 5 8 10 7 6 6 6 15 11 5 1 2 7 12 12 7 5 4 7 11 -The sums of squares for gender are