Explain normal distribution with suitable diagram. Discuss the characteristics and application of normal curve.

Answer – Normal distribution, A symmetrical bell-shaped curve. The two tails of the curve never touch the horizontal axis. It is completely symmetrical, there is a perfect balance between the right and left parts...

Positive and negative correlation

Answer – DIRECTION OF CORRELATION: POSITIVE AND NEGATIVE – Positive Correlation : Positive Correlation indicates that as the value of a variable increases, the value of the other variable also increases. Similarly, as the...

Phi coefficient

Answer – Point-Bilingual Correlation (rρb) was useful when one of the variables was bifurcated. If both variables (X and Y) are bifurcated, Pearson’s product moment correlation is calculated as Phi Coefficient (Phi). Suppose you...

Kendall’s tau

Answer – Kendall’s Tau Correlation is one of the measures. This correlation process was developed by Kendall (1938). Kendall’s Tau is based on the analysis of two sets of ranks, X and Y. This is...

Test of goodness of fit

Answer – Many times a decision – the manufacturer needs to understand whether the actual sample distribution matches a known theoretical distribution such as binomial, poinen, normal, and so on. Similarly, some time researchers...

Null hypothesis

Answer – Null hypothesis, a zero difference hypothesis. A statement about status quo about a population parameter, which is being tested. It is a useful tool in testing the importance of differences. The null...

Skewness

Answer – A distribution is called ““skewed” when the mean and median in the distribution falls on different points and the point of point of center of gravity is shifted from one or the...

IGNOU BPC-004 SOLVED ASSIGNMENT 2019-20

WE PROVIDE HERE FREE IGNOU BPC-004 SOLVED ASSIGNMENT 2019-20. LET’S CHECK OUT – BPC – 004 : STATISTICS IN PSYCHOLOGY Tutor Marked Assignment (TMA) Course Code: BPC-004 Assignment Code: BPC-004/AST/TMA/2019-2020 Marks: 100 NOTE: All Questions...

Use of Range

Answer – The Range is the difference between the largest and smallest data values. Range is easy to calculate compared to other measures of variability and its meaning is direct. The Range is ideal...

Linear relationship

Answer – One of the basic forms of relationship is linear relation. Linear relation can be expressed as a relation between two variables which can be plotted as a straight line. The most basic...

Outliers

Answer – Outliers are a extreme score on either one variable or both variables. The presence of outliers has a very harmful effect on the correlation values. The strength and degree of correlation is...

Variance

Answer – The Variance can be defined as the square of standard deviation. The variance of a variable X(symbolised as V) is the sum of squares of the deviations of each X score from...

Mean

Answer – The means ,know as Average, is the average of all points in discrete or continuous distribution. The method of calculating this mean is different for discrete distribution and continuous distribution. This average...

Point estimation

Answer –We suggest that the x population obtained from a sample is an unbiased and consistent estimate of the mean (µ). Therefore, if a researcher obtains an academic anxiety score from 100 students and...

Discuss the fundamental concepts in determining the significance of the difference between means.

Answer – For some time in the field of psychology we are interested in testing the importance of the difference between two sample means. Fundamental Concepts in Determining the Significance of the Difference between Means...

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