Data Management

• It is a branch of statistics that deals with data analysis and one of its technique is to “describe” data in symbolic form and abbreviated fashion.

  Answer: Descriptive Statistics
• It is an essential quantifying an observation according to a certain rule. It is also assigning numbers in a prescribed way.

  Answer: Measurement
• The linear correlation is said to be substantial relationship if the value of r is ___.

  Answer: Between 0.40 and 0.70
• What is the interpretation for the r value?

  Answer: Very dependable relationship
• It is used in making predictions between two variables.

  Answer: Linear Regression
• What is the value for y-intercept?

  Answer: 69.7
• It is a branch of statistics that has the ability to “infer” and to generalize. It is also the right tool to predict values that are not really known.

  Answer: Inferential Statistics
• If the data are labelled 1st, 2nd, 3rd, and so on, in what kind of scale does it falls?

  Answer: Ordinal Scale
• Personal Biodata falls in what kind of scale?

  Answer: Nominal Scale
• It can be used as tools that provide information regarding average, ranking, and category of scores of a large number of scores.

  Answer: Measures of Central Tendency
• Mean is the arithmetic average of all scores. In the data: 34, 56, 75, 43, and 67, what is the mean?

  Answer: 55
• It is the middle point or midpoint of any distributions. It separates the upper half from the lower half of distribution.

  Answer: Median
• The following is a list of retirement ages for the workers in production plant: 65, 64, 65, 61, 62, 64, 65, 63, 63, 65, 64. What is the median?

  Answer: 64
• It is the most frequently occurring score in the distribution.

  Answer: Mode
• These three measures can provide the information about spread of the scores in the distribution.

  Answer: Range, standard deviation and variance
• What is the range?

  Answer: 2.00

  
• What is the mean (in nearest hundredths)?

  Answer: 2.71
• If the standard deviation in a distribution is 4, what is the variance?

  Answer: 16
• In comparing different groups, there must be a standard scale that can reconcile both means and standard deviation in single standard form. It is only then that direct comparison is possible because transformed scores from different distributions will share common scores and these common scores are called ___.

  Answer: Z-score
• Jerry took College Admission Test which reflected at 89th percentile, what does it indicates?

  Answer: 89% of those who took the exam did not get it right than Jerry.
• It divides the distribution into quarters.

  Answer: Quartile
• The third quartile Q3 is on what percentile rank?

  Answer: 75th Percentile
• In this box-whisker plot What does the middle dot or point denote?

  Answer: Median

  
• It is a unimodal frequency distribution where the scores are scattered on the X-axis while the frequency of occurrence is defined by the Y-axis.

  Answer: Normal Curve
• This table only gives the percentage for the half curve but both the right and the left of the mean yields the same percentage since the said curve is symmetrical.

  Answer: Z - Table
• Scores on English Test have an average of 80 with a standard deviation of 6. What is the z-score of the student who earned a 75 on test?

  Answer: -0.83
• Group of children compared what they received while trick or treating. The average number of pieces of candy received is 43 with a standard deviation of 2. What is the z-score corresponding to 20 pieces of candy?

  Answer: -11.5
• The mean growth of the thickness of tree in a forest is found to be 0.5 cm per year with a standard deviation of 0.1 cm per year. What is the z-score corresponding to 1 cm per year?

  Answer: 5
• It is a statistical tool that can be used to determine the linear association between two distributions or groups. It can only establish the strength of association or correlation but it can never justify any causal relation that may appear and seemed obvious.

  Answer: Pearson R correlation
• There is no linear correlation found if the value of r is ___.

  Answer: 0
• What is the value of r?


  Answer: 0.99

  
• It uses dots to represent values for two different numeric values. It is also important in determining the regression line.

  Answer: Scatter Plot
• What is the value for slope of the line?


  Answer: 1.13

  
• What is the median?


  Answer: 3.00
• It is an essential quantifying an observation according to a certain rule. It is also assigning numbers in a prescribed way.

  Answer: Measurement