When asked to include descriptive statistics include mean, median, mode, and standard deviation for scale-level data, and include just frequency for nominal/ordinal-level data.
Datasets
Part 1, use dataset Part 1_1 data-1.sav for question 1 and dataset Part 1_2 data-1.sav for question 2.
Part 2, use dataset Part 2 data-1.sav.
PART 1
QUESTION 1
A survey was conducted in three college courses. On the survey, students were asked ‘How many siblings do you have’?
Codebook
Variable: Class
Definition: Class designation
Variable Type: Categorical (1 = Prof. Lamm, 2 = Prof. Milner, 3 = Prof. Smith)
Variable: Siblings
Definition: Number of siblings
Variable Type: Continuous
Please complete each of these items and provide the requested information.
a. Run descriptive statistics and a histogram with a normal curve for siblings for the whole data set
b. Run descriptive statistics and a bar chart for class for the whole data set
c. Run descriptive statistics and a histogram with a normal curve for siblings for number of siblings for members of Prof. Lamm’s class only
d. Run descriptive statistics and a histogram with a normal curve for siblings for members of Prof. Milner’s class only
QUESTION 2
A researcher wanted to know if typing proficiency is associated with better spelling
skills. The researcher administered a 20-word spelling test to students in a
classroom. At the bottom of the sheet, there was a question: ‘Can you type accurately without
looking at the keyboard?’
Codebook
Variable: Looker
Definition: Does the student look at the keyboard to type?
Variable Type: Categorical (1 = looks at keyboard, 2 = doesn’t look at keyboard)
Variable: Spelling
Definition: Score on spelling test
Variable type: Continuous
Please complete each of these items and provide the requested information.
a. Run descriptive statistics and a histogram with a normal curve for spelling for the whole data set
b. Run descriptive statistics and a bar chart for looker for the whole data set
c. Run descriptive statistics and a histogram with a normal curve for spelling for ‘looks at keyboard’ only
d. Run descriptive statistics and a histogram with a normal curve for spelling for ‘doesn’t look at keyboard’ only
PART 2
Please complete each of these items and provide the requested information using the Part 2 dataset.
a. Determine the mean, standard deviation, and variance for the variable age1bir (participants age at first birth) using Descriptive statistics from the pull-down menu (Analyze to Descriptive statistics then Descriptive). Include the output and list the values for these descriptive statistics.
b. Using the same variable, age1bir, obtain descriptive values using the frequency procedure (Analyze to Descriptive Statistics then Frequencies).
i. What are the values for mean and mode?
ii. Are the values for mean, SD and other descriptive statistics same as those obtained from Part 2a?
iii. What are the quartile values?
iv. What is the value for the IQR (interquartile range)?
v. Based on the three indicators of central tendency what can you infer about the shape of the distribution?
EVALUATE:
Use this EVALUATE discussion board to post a required entry that reflects your learning experience in the module having to do with Descriptive and Visual Display You can comment on what you learned, how easy or difficult it was to learn, what was surprising or challenging to you, etc.
NOTE: I am still waiting for the client to share some files.