If you wanted to determine whether mean levels of blood glucose were different according to gender and age a one-way ANOVA would be an appropriate test to perform.  True  False

Q: What descriptive statistics would you use for a survey about depression?

A: Descriptive statistics: A descriptive statistic is a summary statistic that quantitatively describes…

Q: What is the purpose of the confidence intervals in Statistics?

A: Confidence interval is derived from the Sample stastics for the estimatation of population…

Q: What is the overall mean? What is the mean of Drug 1? What is the mean of Drug 2? What is the mean…

A: Here use sample mean formula

Q: Based on the boxplot and descriptive statistics, which group shows more variability in narcissism…

A:

Q: While estimating from a sample, you should always try to get a biased B,. Is this correct? O Yes O…

A:

Q: Under what conditions would it be better to use the median instead of the mean?

A: n statistics, three measures of central tendency are widely used. These three measures are also…

Q: What caution is must for finding the median for ordered qualitative data?

A:

Q: standardized scores and normal

A: Normal distributions have a specific curve, and I’ve already posted about that elsewhere; the…

Q: How much difference is there between the mean for the treated sample and the mean for the original…

A: Definition Sample Mean x It is the mean of all the values of a sample.   Population μ It is the mean…

Q: Briefly explain why you should use the ANOVA rather than other tests we studied to determine if the…

A: If there is more than 2 conditions in an experiment a ANOVA is required. The fact the ANOVA can test…

Q: What kind of test is used to solve the test statistic value for the population proportion?

A: We want to tell you what kind of statistic and test are used for population proportion.

Q: Would you be able to help with Standard Deviation along with the range, mean, mode, and median?

A: Measures of variability:The measure of variability or the measures of dispersion can be measured…

Q: What is Percentile Rank of an Observation?

A: Percentiles: If the elements in the data set are arranged in ascending order of magnitude, then the…

Q: If a housing researcher, the town’s mayor, your neighbor, and your mailperson all agree that average…

A: Validity can be defined as the extent to which a test actually measures what it purports to measure.…

Q: The researcher wanted to know the best television program will be played when 4 members of the…

A: Mean = Average of all values Median = Middle Most value Mode = Most frequently occurred value Range…

Q: What statistical tool should be used for the problem?  An insurance company wants to determine the…

A: We need to identify suitable statistical tool

Q: Using the given and computed values, is there a reason to believe that there is no significant…

A: The null and alternative hypothesis is shown as follows: Null hypothesis: The mean difference…

Q: Why do you think that the mean is the most sensitive measure of central tendency?

A: We know that, mean is the ratio of sum of all observation and number of observation. Let, xi be the…

Q: Why is the median less affected by skewed data than the mean?

A: Mean: The average values of the total observations. Median: The value that divided data set into two…

Q: The best point estimator for the population mean is the sample mean. True False

A: TRUE

Q: A research team wants to know whether the mean stress level of employees with pets is different from…

A: Here, the test is to be conducted to check whether the mean stress level is different of employees…

Q: When the mean and the median are far apart in value, there may be some extreme values in the data…

A: If they're far apart, then the values are not normally distributed and the median is the better…

Q: Consider the following scenario: you want to investigate the relationship between the number of…

A: Here we want to see if there is a relationship between 'likes' on Facebook and 'number of friends'…

Q: Why does the observed mean difference should not be taken seriously?

A: Mean difference(MD): Mean Difference is also known as Difference in means. Mean difference measures…

Q: Dr. Volk wanted to see if there was a significant association between in the number of college…

A: H0 : There is no association between in the number of college students by grade level (Freshman,…

Q: Why is statistical inference generally used to obtain information about a population proportion?

A: Generally, the size of the population that is considered under study is large. It would be difficult…

Q: Name the 4 circumstances where the median would provide a better measure of central tendency than…

A: Central tendency: The value that is used for describing the full data set using the central position…

Q: What is difference between the Differences between Mean and Median?

A: The measures of centre or measures of central tendency are those descriptive measures that give the…

Q: What is the average IQ of these subjects?

A:

Q: If you have the following data, which measure of central tendency (Mean or Median) will be suitable?…

A: Given data in increasing order is shown below 10 20 20 30 30 30 30 40 40 50 90 120

Q: Why is it important to report both a measure of central tendency and variability to describe a set…

A: Basic idea about measures of central tendency and dispersion Measure of Central tendency is the…

Q: does this mean that the answer saying "The sample statistic equation is correct to use when the data…

A: Yes you are correct. The sample is the the subset of the population.

Q: I am lookin for the relationship between the sample mean and the population mean and also the…

A: An estimate mus be having few properties in the sense of best estimate.Unbiasdness is one the…

Q: Roughly speaking, what are the normal scores corresponding to a sample of observations?

A: The normal scores corresponding to a sample of observations are observations and expect same sample…

Q: When selecting measures of association and the two variables of interest are measured at different…

A: In Statistics, measure of association is used to quantify a relationship between two or more…

Q: What is difference between mean, median and mode?

A: Mean: The arithmetic mean (also called the mean) is the most commonly used measure of central…

Q: When we comparing the hospitals in our area for seeking a better care, what statistics or data we…

A: It is an important part of statistics. It is widely used.

Q: If you wish to run a hypothesis test to see if the mean cholesterol level is more than 200 mg/dL,…

A: Test is that whether mean cholesterol level is more than 200 mg/dL.

Q: What does level of significance indicates?

A:

Q: Explain why we cannot calculate the mean and standard deviation for scores on a categorical…

A: Variables:They can be classified into two typesCategorical (Qualitative)Quantitative

Q: Why is hair color classified as categorical data?

A: In categorical variable we simply assign labels for identification. Categorical values are discrete…

Q: _________ are used to display actual data points for individual-level data. Would this answer be…

A: Univariate Statistics:Univariate data is that the data information is depends on only one random…

Q: What is the formula for the mean absolute deviation formula for paired data sets?

A:

Q: How is the goal served by computing a measure of variability?

A: We need to find the goal served by computing a measure of variability

Q: If the average of the data set given below as a missing ('*') value is 7.5, calculate the Q1 (lower…

A: The mean is calculated as follows: Mean=∑xn    7.5=5+2+11+*+8+9+12+98     60=56+*       *=60-56…

Q: Your boss wants to use absenteeism rates to predict which employees will most likely quit during the…

A: Statisticians choose the appropriate test statistic with objective to know the rate of leaving the…

Q: Why do we have a margin of error in statistics? If statistics are meant to be accurate, why are they…

A: We know that in statistics while carrying out an experiment we generally deal with a sample to get…

Q: What is the mean difference between the samples?

A: Test is that whether the mean number of mass transit trips is equal for both neighborhoods. Note :…