Stats Psych: Multiple Choice Questions With Correct Detailed Answers.

which of the measures of central tendency is most affected by others? - correct answers mean students were asked to rate how much they enjoyed a class on a scale of 1 (not at all) to 5 (very much). What scale of measurement us being used here? - correct answers ordinal What measures of central tendency should be used to summarize the data collection in question #2? - correct answers mean median + mode For her capstone project. Adriana decided to measure creativity by giving participants the Alternative uses test. In this test, participants try to come up with atypical uses for participants. In this example, creativity is a(n) - correct answers construct Imagine you are measuring facial attractiveness by asking participants to rate the attractiveness of a photograph on a scale of 1 (not at all attractive) to 5 (extremely attractive). In this example, attractive is a(n) _______ and attractive rating is a(n) __________ - correct answerstheoretical construct variables Imagine you are measuring facial attraction by recording how much time a participant views a photograph before switching to a new image. In this example, the viewing time is measured on a ______ - correct answersratio scale What is the difference between an interval scale and a ratio scale - correct answerszero has meaning on a ratio scale, not a interval scale What kind of scale is used to measure dog breeds (lab, boxer, dalmatian?) - correct answersnominal You've asked participants to respond to the statement, "I love statistics" by selecting from the following options, "Strongly Agree, neither agree nor disagree, disagree, strongly disagree" The resulting variable is measured on ___ - correct answersordinal The response to the question, "do you own an iphone" is measured on a ____ scale - correct answersnominal describe the skew of the data plot (starts flat on left side and goes up on the right) - correct answersnegative skew Which of the following variable below is not discrete - correct answersamount of time spent viewing an image Paul is studying depression. He asks two groups of individuals (one individual diagnosed with/ major depression: and one individual with no mental health diagnosis) to write a 250-word description of theif feelings and mood. He looks for how often each group used negative words Paul's data is....... - correct answersqualitative Researchers measured the amount of time it took participants to compete a difficult task. Is it appropriate for these researchers to use standard deviation as a measure of variability? - correct answersYes it is the statistic that represent a difference between the 75th percentile and 25th percentile - correct answersinterquartile range Which of the samples below has the most variable scores? (whoever has the highest SD) - correct answersmean= 85 SD= 15 the length if the "box" in a boxplot represents - correct answersinterquartile range which part of a box plot represents the mean of a distribution - correct answersthe horizontal line within the box interquartile ranger (IQR) is most often used with which measure of central tendency? - correct answersmedian why shouldn't we use mean to describe bimodal distribution? - correct answersmean in a bimodal distribution does not accurately represent central tendency why does scientists tend to report standard deviation instead of variance when desrcibing their data? - correct answersSD is in the same units as measures of central tendency The chart is best described as.... (the chart is square plots touching) - correct answershistorgram the data in the plot above shows.... (graph starts highish and then goes down to the right) - correct answersrightward skew if we plot the mean, median, and mode of this distribution as vertical lines on the chart above, what order would the three appear in from left to right? - correct answersmode, median, mean which is the the mode of the distribution (most commonly seen number) - correct answers116cm When data is z-transformed, the shape of z distribution.... - correct answersis the same as the original distribution The more variable a dataset is, the _______ the dataset's IQR and standard deviation - correct answerslarger If the probability of committing type 1 error is sufficiently low, a researcher should..... - correct answersreject the null hypothesis Which measure of central tendency will best describe the distribution of plant heights.... - correct answersmode(s) Suppose that you have measured the height of different plants around a field and created the distribution shown above... *goes up and then down and then up* (rollar coaster) - correct answersBiomodal Blood type (A,B,AB,O) is measured on a(n) _______ scale - correct answersnominal During a survey, participants had to respond whether their car is worth less then 5,000; 5,000-20,000 or above $20,000. Here, car price is measured on a(n) ____ scale - correct answersordinal scale You have asked people to respond to the statement, "Chocolate is irresistible." by selecting between the options. "Strongly Agree," "Agree," "Neutral," "Disagree," or "Strongly Disagree." What scale is this variable measured on - correct answersOrdinal Scale Which part of a box plot represents the 25th percentile? - correct answersThe bottom of the box Which of the samples below has the most variable scores? (which has the highest standard deviation) - correct answersMean = 85 Standard Devation = 15 In the sample of long jump lengths described by the plot above, which measure of central tendency will be most affected by the data in the lower tail (graph starts on the bottom and then rises up for a peak and comes back down) - correct answersmean The distribution of long jump lengths (above) is most appropriately described as...... - correct answersnegatively skewed Research is measuring how long it takes a child to get upset after being asked to do something by their parent. When a parent requests their child, the researcher starts a stopwatch. As soon as the child begins showing signs of being upset, the stopwatch is stopped and the time is recorded. This variable is measured on a(n) - correct answersratio scale The standard error of the mean - correct answers~describes the width of the sampling distribution ~is related to the shape of the standard deviation and sample size ~is used to calculate z-observed during a z-test (all of the above) When can use sampling distributions to - correct answersdetermine the likelihood of the alternative hypothesis being true In a statistical comparison of two groups, you find a Cohen's d= 0.59. This value indicates - correct answersthe difference between the mean is moderately large A researcher finds a p-value = 0.03. This means - correct answersthe probability of making a type 1 error given the data is 3% Imagine that you are comparing whether people better remember words written red ink or words written in black ink. In this study the null hypothesis is..... - correct answerswords written in red ink are remembered as well as words written in black ink which of the following statements about probability is NOT true - correct answersprobability can be negative You read that average scored on a mental rotaion test for males are M= 13.29 SE= 0.89, 95% CI {11.46 and 15.13} this means that.... - correct answersyou can be 95% confident that this confident interval contains the population mean score for this mental rotation test Z-score transformation changes what aspect(s) of a distribution - correct answersthe mean Central Limit theorem states that as sample sizes_____, the sampling distribution approaches _____ - correct answersincreases decreases After z-score transformation, you found that one participant has a z-score of -4.0 for compliance with COVID recommendations. This means that this participant compliance score is..... - correct answers4 standard deviations below the mean of the sample As sample size increases, the standard error of the mean - correct answers decreases A sampling distribution - correct answers a distribution of a statistic estimated by an infinite number of samples