Which of the 2 predictors, Gest or Weight, is a better predictor of Height?

Q: Determine the two values of z such that the middle 58% of the data lie between the two z-values.

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Q: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.  Explain…

A: Given: The 95th percentile of 6-year-old boys' heights in the United States is 48.8 inches tall.

Q: how are parameters and statistics related?

A: Parameter: The parameter is used to explain the entire population. For example, a teacher calculated…

Q: What are 2 situations when you will use mode as a measure for central tendency.

A: Mode mode is the value which occurs most frequentlyn in the data set of observation and around which…

Q: State each case whether you would expect a positive correlation, a negative, or no correlation.  1)…

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Q: Briefly explain the difference and similarity of correlation and regression.

A: Correlation Regression  It determines the interconnection or a relationship between the variables.…

Q: What proportion of z scores lie beteeen -2 and +2 in the height in inches data set? Round your…

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Q: I surveyed a sample of 68 customers in a business to see how much they spend in there.  Would this…

A: Parameter: Any statistical measure based on all units in the population is called Parameter.…

Q: What is a standard abbreviation for the mean?

A: Mean is a measure of center in case of quantitative data.

Q: Supposed that you were asked to examine the relationship between the height of children and their…

A: The test statistic is given as-  t=estimate/standard error For slope, t=0.73/0.10=7.3 For intercept,…

Q: When expressing findings from data gathered the mean and the median can always be used…

A: In statistics, there are two types of measures namely measures of central tendency and measures of…

Q: Why do we use area to represent frequency when we’re graphing histograms?

A: Introduction A histogram is a graph which shows the frequency of the numerical data.

Q: For each research question, explain what research design you would recommend. Also, identify how you…

A: Factorial Design 2×2: It is the factorial design with two factors in a single experiment. In this…

Q: Illustrate Interpret significant and non-significant differences?

A: If the p-value is below the provided level of significance, than the null hypothesis would rejected…

Q: If we add a constant (say, d) for all data values, how this will affect the geometric mean? and what…

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Q: Suppose an estimator for a window supplier made a mistake in measuring by inputting the width of a…

A: Is cost of window is p dollar/inch2 And lengh of window is l Then total lose =lp dollar

Q: whats negative skew?

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Q: What are the limitations of the mean

A: A.M is a ratio of sum of observations to the number of observations.

Q: To which percentie,quartile and decile does the median correspond?

A: We want to find the relationship between median, quartile, percentile, decile

Q: Mark wants to know whether the average amount of television viewing differs based on students’ grade…

A: dependent variable and independent variables

Q: What is p value ?

A: The​ P-value is the probability of observing difference in the sample statistic this high or higher…

Q: The percentile gives an indication of the relative position of the scores. True or False?

A: Partition values are the values which divide the series into a number of equal parts.  * Three…

Q: udge and Cable (2010) report the results of a study demonstrating a negative relationship between…

A: Given:   x y 4 151 5 88 3 52 2 73 1 49 3 92 1 56 5 143

Q: State the type of correlation between the number of hours students spend studying and the number of…

A: Correlation is the measure of linear association between two quantitative variables. If one…

Q: A machine makes sticks of butter whose average weight is 4.0 ounces. The SD of the weights is 0.05…

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Q: doctor is studying the effects that the amount of junk food has on blood pressure.  As each patient…

A: Here  Observational study means Simply data is collected without interfering the objects..m While In…

Q: 2. Explain the steps of finding the IQR.

A: 2) The steps to finding the value of IQR is, Step 1: First arrange the data in ascending order Step…

Q: one percent of grades are greater than what z-score?

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Q: If a person’s z score equals 2.08, what is their percentile?

A: Given info: The person’s z score equals 2.08.

Q: Use one example to explain why the level of measurement is the first thing needed to know in data…

A: The level of measurement is the first thing needed to know in data analysis. Examples are given…

Q: State each case whether you would expect a positive correlation, a negative, or no correlation. 4)…

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Q: How do you explain the variables of a histogram?

A: Histogram is a visual representation by showing the frequency of data that fall within a specified…

Q: How do you find the median of X?

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Q: What are 2 situations when you will use median as a measure of central tendency.

A: The median is the midpoint of the data array when sorted in either increasing or decreasing order.

Q: Why do we use area to represent frequency when we're graphing histograms?

A: Histogram :  It is graphical representation of frequency for continuous class intervals.    X-axis :…

Q: What does the R-Squared represent?

A: Solution r is the correlation coefficient

Q: Which one measure of central tendency would you report for the variable SEX (1=male, 2= female)

A: The measure of central tendency provides a measure about the center of the set of the observations.

Q: What do you mean by relative frequency?

A: To understand the relative frequency let me first explain the frequency. Frequency - The number of…

Q: For item 4 to 6. Table 3.8 shows the heights of a sample of 12 fathers and their oldest adult sons.…

A: Given data: Height of father (X) Height of son (Y) 65 68 63 66 67 68 64 65 68 69 62…

Q: Correlation does not imply causation. What does this mean? Find an example in the media that needs…

A: Correlation measures the amount of linear relationship between two variables. The relationship may…

Q: Q5. Briefly explain four factors often used to subdivide life in mortality statistics.

A: Mortality of a population is a measure of the rate of death among that population. Mortality of a…