Name:

1) What descriptive statistics are appropriate to report for ice cream preference? (1 point)

The descriptive statistic that is appropriate for this sample is frequency and finding the percentage of chocolate and vanilla to report the percentage of ice cream preference (Frequency/N)x100

N=sample size

2) Calculate those. Show your work! (1 point)

Chocolate: (5/8)x100=62.5 % (Like Chocolate)  

Vanilla: (3/8)x100=  25 % (Like Vanilla)

3) What descriptives are appropriate to calculate for anxiety, assuming a positive skew? (1 point)

 Median, and mode

4) Calculate those. Show your work! (1 point)

2,3,3,4,4,5,5,6

Median = (4 + 4) / 2 = 8 / 2 = 4

Mode 3,4,5

5) What descriptives are appropriate to calculate for hours of meditation, assuming normal distribution? (1 point)

Mean, median, range and mode

6) Calculate those. Show your work! (2 points)

Mean 

(3 + 1 + 3 + 3 + 3 + 2 + 1 + 0) / 8 = 16 / 8 = 2

The mean hours of meditation is 2.

Variance 

·       Variance = [(3 - 2)^2 + (1 - 2)^2 + (3 - 2)^2 + (3 - 2)^2 + (3 - 2)^2 + (2 - 2)^2 + (1 - 2)^2 + (0 - 2)^2] / 8

·       Variance = (1 + 1 + 1 + 1 + 1 + 0 + 1 + 4) / 8 = 10 / 8 = 1.25

·       The variance is 1.25 hours 

Range:

Range = Maximum - Minimum = 3 - 0 = 3 hours

The range of hours of meditation is 3 hours.

7) Calculate a z-score for someone who meditates for 3 hours a week. (2 points)

8) Calculate the percentile for that same person. (2 points)

9) In 2022, U.S. adults watched an average of 15 hours of TV per week, with a standard deviation of 4 hours. Using the data on the first page, determine if your sample watched a significantly different amount of TV than the U.S. population.

a.  <span class="Apple-tab-span"> </span>Calculate the appropriate statistic and show your work. (3 points)

b. <span class="Apple-tab-span"> </span>What is your critical value? (1 point)

c.  <span class="Apple-tab-span"> </span>Can you reject the null? (1 point)

10) Using the following information, format:

a.  <span class="Apple-tab-span"> </span>A parenthetical in-text citation (1 point):

b. <span class="Apple-tab-span"> </span>A non-parenthetical in-text citation (1 point):

c.  <span class="Apple-tab-span"> </span>A reference (2 points):

Article title: Social Media Usage: Analyzing Its Effect On Academic Performance And Engagement Of Higher Education Students

Authors: Muhammad Shafiq, Khalida Parveen

Journal title: International Journal of Educational Development

Additional article information: Published in 2023 in volume 98

DOI: 10.1016/j.ijedudev.2023.102738