Math Problem Statement

Using the table below, calculate the mean number of hours spent looking at mobile screens per day for 2019 and 2020.

Using the table below, calculate the mean number of hours spent looking at mobile screens per day for 2019 and 2020.

Solution

The image is displayed, but I need to extract the data to calculate the mean hours spent looking at mobile screens for both 2019 and 2020. I'll manually note the table from the image and proceed with the calculations.

The table contains the following dataThe image is displayed, but I need to extract the data to calculate the mean hours spent looking at mobile screens for both 2019 and 2020. I'll manually note the table from the image and proceed with the calculations.

The table contains the following

Number of Hours20192020
09165
1316261
2418389
3287298
4194193
599100
65561
7818
83033
932
101222
1103
121011
1311
1402
1511
1611
1802
2011
2410

Now, I'll calculate the mean number of hours for both 2019 and 2020 using weighted averages.The mean number of hours spent looking at mobile screens per day for:

  • 2019 is approximately 2.79 hours.
  • 2020 is approximately 3.07 hours.

These values reflect a slight increase in screen time from 2019 to 2020.

Would you like any further details or clarifications?

Here are 5 related questions you might explore:

  1. How does the median screen time compare to the mean for both years?
  2. What is the total increase in screen time from 2019 to 2020?
  3. What is the variance and standard deviation of screen time for each year?
  4. How do extreme values (like 24 hours) impact the mean for each year?
  5. Can the mode (most frequent number of hours) for both years be calculated?

Tip: When analyzing time-based data, the mean may not always capture extreme patterns—consider using median and mode for additional insights.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Weighted Average
Statistics

Formulas

Weighted Mean = Σ(hours * frequency) / Σ(frequency)

Theorems

Weighted Mean

Suitable Grade Level

Grades 9-12