stats Psychology 2101 questions well
answered graded A+
Statistics - correct answer ✔✔Branch of mathematics that focuses on the organization, analysis
and interpretation of a group of numbers
Two branches of statistics Methods - correct answer ✔✔Descriptive statistis and Inferential
statistics
Descriptive Statistics - correct answer ✔✔Summarize and describe a group of numbers from a
research study
A series of precise symbols for the description of what could be great quantities of data
A form of shorthand
Inferential Statistics - correct answer ✔✔Draw conclusions and make inferences based on the
numbers in a research study that reaches beyond the sample studied
Allows scientists to make connections to larger groups
Characteristics of the ideal experiment - correct answer ✔✔1. Participants are identical
between the groups (internally valid) using random assignment of participants before the
experimentation
2. Experimental and control are exposed to identical circumstances axcept for the manipulation
of the independent variable (Internally valid)
3. Sample perfectly represents intended population (externally valid)
4. Measurement of dependent variable is appropriate for what is being measured
, Other Research Designs - correct answer ✔✔o Correlational Studies, using observational data
rather than manipulating a variable as it may be too costly or unethical to do so
1. Matched-group:
2. Matched-group pretest-posttest
3. Repeated-measures true experiment
4. Single-group pretest-posttest
5. Correlational study
6. Single-subject
Mesokurtic: - correct answer ✔✔The normal distribution where Ku = 0
Leptokurtic - correct answer ✔✔Less dispersion of the points where Ku = (+)
• More frequently occurring low and high scores relative to the normal distribution
• Peak is up more
Platykurtic - correct answer ✔✔Greater dispersion of data where Ku = (-)
• Less probability of scores at the high and the low level, along with the middle
Representative Value - correct answer ✔✔A single value or simple way to describe a group of
scores
Variability - correct answer ✔✔The amount of variation among scores
o Variance
o Standard Deviation
Central Tendency - correct answer ✔✔Most representative value of a group of scores
answered graded A+
Statistics - correct answer ✔✔Branch of mathematics that focuses on the organization, analysis
and interpretation of a group of numbers
Two branches of statistics Methods - correct answer ✔✔Descriptive statistis and Inferential
statistics
Descriptive Statistics - correct answer ✔✔Summarize and describe a group of numbers from a
research study
A series of precise symbols for the description of what could be great quantities of data
A form of shorthand
Inferential Statistics - correct answer ✔✔Draw conclusions and make inferences based on the
numbers in a research study that reaches beyond the sample studied
Allows scientists to make connections to larger groups
Characteristics of the ideal experiment - correct answer ✔✔1. Participants are identical
between the groups (internally valid) using random assignment of participants before the
experimentation
2. Experimental and control are exposed to identical circumstances axcept for the manipulation
of the independent variable (Internally valid)
3. Sample perfectly represents intended population (externally valid)
4. Measurement of dependent variable is appropriate for what is being measured
, Other Research Designs - correct answer ✔✔o Correlational Studies, using observational data
rather than manipulating a variable as it may be too costly or unethical to do so
1. Matched-group:
2. Matched-group pretest-posttest
3. Repeated-measures true experiment
4. Single-group pretest-posttest
5. Correlational study
6. Single-subject
Mesokurtic: - correct answer ✔✔The normal distribution where Ku = 0
Leptokurtic - correct answer ✔✔Less dispersion of the points where Ku = (+)
• More frequently occurring low and high scores relative to the normal distribution
• Peak is up more
Platykurtic - correct answer ✔✔Greater dispersion of data where Ku = (-)
• Less probability of scores at the high and the low level, along with the middle
Representative Value - correct answer ✔✔A single value or simple way to describe a group of
scores
Variability - correct answer ✔✔The amount of variation among scores
o Variance
o Standard Deviation
Central Tendency - correct answer ✔✔Most representative value of a group of scores
