Question

1: Compute measures of central tendency below:

a)Mean, median, and mode for the grades taken by students

b)Mean, median, and mode for the number of hours studied

Discussion question 2: Does the number of hours studied correlate
with the grades taken? Please provide a narrative explaining the
relationship between the number of hours studied and the grades by
running correlation analysis in Excel.

**In Excel, use insert function to compute the measures of
central tendency and use the CORREL function to find the
correlation coefficient between between the number of hours studied
and the grades. The value you will get will represent to what
extent these two variables are correlated. For example if the
result is 95, it means that these two variables are almost
perfectly correlated (95%).**

Student ID | Grade | # of hours studied |

Student 1 | 70 | 4 |

Student 2 | 90 | 7 |

Student 3 | 80 | 6 |

Student 4 | 50 | 2 |

Student 5 | 80 | 6 |

Student 6 | 80 | 6 |

Student 7 | 90 | 7 |

Student 8 | 90 | 6 |

Student 9 | 50 | 5 |

Student 10 | 40 | 2 |

Student 11 | 100 | 8 |

Student 12 | 90 | 8 |

Student 13 | 70 | 4 |

Student 14 | 80 | 6 |

Student 15 | 80 | 6 |

Student 16 | 90 | 2 |

Student 17 | 60 | 8 |

Student 18 | 70 | 2 |

Student 19 | 50 | 3 |

Mean (Average) | ||

Mode | ||

Median | ||

Correlation |

Answer #1

The values are calculated using excel functions of mode, median, mean and correlation.

As correlation is 58.77%, it can be said that grades and number of hours are not significantly correlated to each other as far as this data is concerned. The correlation is average or medium.

The three commonly used measures of central tendency
are
mode, median, and mean.
percentage, midpoint, and mean.
mode, midpoint, and ratio.
median, rate, and mode.
T he purpose of univariate descriptive statistics is
to
summarize relationships between many variables.
display the essential meaning of variables measured at the
interval-ratio level.
combine nominal and discrete variables.
summarize a single variable.
The most appropriate measure of central tendency for
gender would be the
median.
mode.
mean.
None of the above
If you...

Mean, median, and mode are the three measures of central
tendency that we learned about in this class. We use these to
describe the center of a distribution. For each of the following
examples please identify which measure of central tendency should
be used given the situation.
A negatively skewed distribution
A platykurtic distribution

For each variable, any measures of central tendency (e.g., mean,
median and mode) that can be calculated should be noted.
Are the following correct:
Calories-scale/ratio-mean, median, and mode
Exercise-nominal-mode
TV- scale/ratio-mean, median, and mode
Fruits- scale/ratio-mean, median, and mode
Insurance-nominal- mode
Diabetes-nominal—mode
Age-scale/interval/ratio-mean, median, and
mode
Education level-ordinal- median and mode
Yearly salary-scale/ratio-mean, median, and
mode
Sleep-scale/ratio-mean, median, and mode
Alcohol-scale/ratio-mean, median, and mode

What are measures of central tendency? What do they tell us? Do
mean, median, and mode fall in the same order? Be able to
calculate/identify each.

Which measure of central tendency would you use for the
following variables (mean, median or mode). Explain your
choice.
Gender:
Class rank at a college:
Age of high school students:
A skewed income distribution (90% with incomes under $150K; a
few with incomes of several million):

This week, we cover the central tendency, which
includes mean, median and mode
As a medical facilitator, you are asked to analyze data
from the past years patient visits. As you analyze, you look at the
median wait time before seen by a physician. Would the median be
the best representation of the wait time, please
explain?

5.
What measure of central tendency (mean, median, or mode) should you
use if you wish the deviations above the measure to be equal in
size to the deviations below the measure?

5. In the GSS2012 dataset, using Explore, determine the
measures of central tendency and spread for HAPMAR (Happiness of
Marriage). Examine the statistics and determine which measures of
central tendency and spread are most appropriate.
Mean:
1.37
Median:
1.00
Standard deviation: .540
Range:
2
Interquartile Range: 1
Highlight the measure you would use as the measure of central
tendency:
Mean
Median
Mode
Why did you make this selection? Do not give me a definition of
mean/median/mode, but rather...

the
teo most frequently used measures off central tendency are the mean
and the median. compare these two measurements for the following
characteristics . takes every score into ain't? affected by extreme
scores? advantages? disadvantages ?

Seeing if i did these right
What is the goal of central tendency?
The goal of central tendency is to
find the “middle” of a distribution. It identifies one single
measure that best describes a set of data
Find the mean, median, and mode for
the following sample of scores: 5, 4, 5, 2, 7, 1, 3, 5
Mean________4_______
Median_______4.5________ Mode_______5________
Find the mean, median, and mode for the following sample of
scores: 3, 5, 7,, 3, 9, 8, 3,...

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