Demo Test - 12 Picasso

What does the mean represent in a dataset?

• The most frequently occurring value

• The middle value in an ordered dataset

• The sum of all values divided by the total number of values

• The difference between the highest and lowest values

A teacher ranks students based on their academic achievements. What type of statistical measure is being used?

• Mean

• Rank

• Standard Deviation

• ANOVA

What does a high standard deviation indicate in a dataset?

• The values are very close to each other

• The dataset has little variability

• There is a wide spread of values

• The mean is incorrectly calculated

Which statistical test is best for comparing the means of two independent groups?

• ANOVA

• Rank Test

• t-Test

• Standard Deviation

A researcher wants to analyze differences in exam scores among students from three different teaching strategies. Which statistical test should be used?

• t-Test

• Mean Comparison

• Standard Deviation

• ANOVA

What is the first step in conducting data analysis in SPSS?

• Compute descriptive statistics

• Enter data into SPSS

• Open SPSS and load the dataset

• Run a t-Test

What does a p-value less than 0.05 indicate in a t-Test?

• No significant difference between groups

• A significant difference between groups

• The groups have the same mean

• The standard deviation is too high

In SPSS, which option should be selected to compute descriptive statistics?

• Analyze > Compare Means > Independent-Samples T-Test

• Analyze > Descriptive Statistics > Frequencies or Descriptives

• Analyze > Compare Means > One-Way ANOVA

• Analyze > Regression > Linear

If the mean test score of five students is 88.4, what does this tell us?

• Most students scored exactly 88.4

• 88.4 is the middle value in the dataset

• The average performance of students is 88.4

• The highest score is 88.4

A study finds that p = 0.02 after performing ANOVA on three groups. What does this mean?

• All groups have the same performance

• There is a significant difference between at least one group

• The dataset is normally distributed

• The data needs to be re-analyzed